Patents on Lead-free (Pb-free) Piezoelectric Materials in Japan

presented by Dr. Keiji KUSUMOTO, JAPAN

< Back to JAPAN top page >

I hope that useful lead-free piezoelectric ceramic materials are developed for saving the enviroments by sharing of information about the material.

< お知らせ 2015年8月 >----------

特許庁【電子図書館】の開示方針の変更によって、従来通りの出願検索が出来なくなったので、本ページの更新は終了しました。

しかし、せっかく作成したので、今後の研究される方のために放置しています。ご参考にどうぞ。

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< Index >

1. BiFeO3-based

2. BNT, BKT-based

3. Bi-layered, Tungsten-Bronze, others

4. Nb-based ceramics (KNN,NaN, etc.)

5. Single crystal, BaTiO3-based, and Others

6. Patents

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Compositions /// Best piezoelectric properties /// Open Patent Candidates Nomber in JAPAN /// Company

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1< BiFeO3-based ceramics >   39 candidates

Bi(Fe,Mn)O3+BaTiO3////Pat.No.2009-252789 //// EPSON1

Bi(Fe,Mn)O3+BaTiO3////Pat.No.2009-252790 //// EPSON2

BiFeO3-NdMnO3-BiAlO3-based actuator//// Pat.No.2011-46129 //// Seiko-EPSON3

(Bi,La)(Fe,Mn)O3 film + inkjet head//// Pat.No.2011-142122 //// Seiko-Epson4

(Bi,La)(Fe,Mn)O3 film + inkjet head//// Pat.No.2011-142146 //// Seiko-Epson5

BiFeMnO3-BaTiO3 film //// Pat.No.2011-222849 //// Seiko-Epson6

Bi(Fe,Mn)O3-BaZrTiO3 //// Pat.No.2011-249816 //// SEIKO-EPSON7

(Bi,La)(Fe,Mn)O3 film + inkjet head//// Pat.No.2012-18994 //// Seiko-Epson8

(Bi,La)(Fe,Mn)O3 film + inkjet head//// Pat.No.2012-18995 //// Seiko-Epson9

(Bi,Ba)(Fe,Ti)O3 film //// Pat.No.2012-054560 //// Seiko-Epson10

(Bi,Ba)(Fe,Ti)O3 film //// Pat.No.2012-106389 //// Seiko-Epson11

(Bi,Ba)(Fe,Ti)O3 film //// Pat.No.2012-109361 //// Seiko-Epson12

(Bi,Ba)(Fe,Ti)O3 film //// Pat.No.2012-124354 //// Seiko-Epson13

Bi-based film //// Pat.No.2012-136487 //// Seiko-Epson14

Bi-based film //// Pat.No.2012-136488 //// Seiko-Epson15

Bi-based film //// Pat.No.2012-158496 //// Seiko-Epson16

Bi-based film //// Pat.No.2012-169378 //// Seiko-Epson17

Bi-based film //// Pat.No.2012-169401 //// Seiko-Epson18

BiFeO3-BaTiO3 inkjet actuator  //// Pat.No.2013-099916 //// Seiko-Epson19

BiFeO3-BZT d33=58  ///  Pat.No. 2013-179318  EPSON20

(Bi,La)(Fe,Mn)O3  /// Pat. No. 2014-116625  /// Seiko-Epson21

Bi(Zn,Ti)O3-La(Zn,Ti)O3-Ba(Sc,Nb)O3// d33=250, Tc=200deg.C//Pat.No.2009-256186 //// CANON1

BiFeO3-based ////Pat.No.2010-30826 //// CANON2

(Ba, M)(Ti,Ni)O3 //// Pat.No.2011-001257 //// CANON3

BT-Bi(Mg,Ti)O3  /// Pat. No. 2014-116610  ///d33=300/// Canon+Tokyo Institute of Tech.4

BiFeO3? ////Pat.No.2009-287066 //// FUJIFILM1

Bi(Al,Ga)O3////Pat.No.2010-4007 //// FUJIFILM2

BT-BiFeO3 ////Pat.No.2009-242229 //// FUJI FILM3

Bi(Fe,Al)O3////Pat.No.2009-267363 //// FUJIFILM4

Bi(Fe,Al)O3////Pat.No.2009-267364 //// FUJIFILM5

Bi(Fe,Co,Mn)O3 ////Pat.No.2010-10654 //// FUJIFILM6

BiFeO3-BaTiO3 ////Pat.No.2010-16010 //// FUJIFILM7

BiFeO3-BaTiO3 ////Pat.No.2010-16011 //// FUJIFILM8

Bi(Al,Ga)O3 ////Pat.No.2010-24060 ////d33=150/// FUJIFILM9

Bi(Al,Ga)O3 ////Pat.No.2010-43353 //// FUJIFILM10

BiFeO3+AD method ////Pat.No.2010-53422 //// FUJIFILM11

BiFeO3+BaTiO3 film ////Pat.No.2010-67756 //// FUJIFILM12

BiFeO3-based //// Pat.No.2011-35385 //// FUJIFILM13

BaTiO3-BiFeO3-based tire puressure sensor//// Pat.No.2011-71389//// FUJIFILM14

(Bi, x)(Fe,Mn)O3 //// Pat.No.2011-249587 //// FUJI Film15

(Bi, x)(Fe, Ti,Mn)O3 //// Pat.No.2011-249588 //// FUJI film16

BT-Bi(Mg,Nb)O3 /// Pat. No. 2014-129215  ///d31=210/// Kyocera1.

2< BNT, BKT-based ceramics >  80 candidates

(1-x)Bi0.5Na0.5TiO3- xLaFeO3 //// kp=0.28 //// Pat.No.2001-048641 //// Tokin Corporation1

(1-x)Bi0.5Na0.5TiO3- xNaSbO3 //// kp=0.368 //// Pat.No.2000-335968 //// Tokin Corporation2

(1-x)Bi0.5Na0.5TiO3- xBiCrO3 //// kp=0.312 //// Pat.No.2000-335967 //// Tokin Corporation3

(1-x)Bi0.5Na0.5TiO3- xBiFeO3 //// kp=0.217 //// Pat.No.2000-272963 //// Tokin Corporation4

Bi0.5(Na1-xKx)0.5TiO3 (BNKT) //// kp=0.425 //// Pat.No.2000-272962 //// Tokin Corporation5

Bi0.5(Na1-xKx)0.5TiO3 (BNKT) //// kp=0.211 //// Pat.No.Heisei 11-171643 //// Tokin Corporation6

Bi0.5(Na1-xKx)0.5TiO3 (BNKT) //// kp=0.211 //// Pat.No.2000-22235 //// Tokin Corporation7

>>>>Pat.No.9-361880 //// Tokin Corporation8

Bi0.5(Na1-xKx)0.5TiO3 (BNKT) //// kp=0.211 //// Pat.No.Heisei 11-217262 //// Tokin Corporation9

((1-x)Bi1-aNaa)TiO3- (1-x)LiNbO3 //// kp=0.327 //// Pat.No.2000-143339 //// Tokin Corporation10

Bi0.5(Na1-xLix)0.5TiO3 //// kp=0.234 //// Pat.No.2000-44335 //// Tokin Corporation11

Bi0.5(Na,K)0.5[Ti,(Mg, Ta)]O3 //// kt=0.416 //// Qm=110 //// Pat.No.2003-201171 //// NEC/Tokin Corporation12

Bi0.5(Na,K)0.5[Ti,(Al, Mo)]O3 /// kp=0.27 /// Pat.No.2003-238245 /// NEC/Tokin Corporation 13

Bi0.5(Na,K)0.5[Ti,(Mg, Nb)]O3 //// kp=0.30 //// Pat.No.2004-35350 //// NEC/Tokin Corporation14

Bi0.5(Na,K)0.5[Ti,(M,V)]O3 //// kp=0.29 //// Pat.No.2004-43210 //// NEC/Tokin Corporation15

Bi0.5(Na,K)0.5[Ti,(M,V)]O3 //// kp=0.29 , kt=0.4 //// Pat.No.2004-168603 //// NEC/Tokin Corporation16

BNT-BT-KNN //// Pat.No.2011-230962 //// NEC-TOKIN17

BNT-BT-Ba(Mg,Nb)  //// Pat.No.2013-1591 //// NEC-Tokin18

(1-x)Bi0.5Na0.5TiO3- xBaTiO3 (BNBT) //// d33=100x10-12C/N or more

>>>>Pat.No.2001-48642 //// NGK SPARK PLUG CO., LTD.1

BNT-BKT-BT //// d33=158pC/N //// Pat.No.2001-151566 //// NGK SPARK PLUG CO., LTD.2

BNT-BKT-BT+PT and sensor //// d33=127

>>>>Pat.No.2004-77304 //// NGK SPARK PLUG Co.,LTD3.

BNT-KN /// Pat.No.2008-120665 /// NGK INSULATORS,LTD.1

Bi0.5Na0.5TiO3- BaTiO3 (BNBT) //// k33=0.62 d33 = 253pC/N

Bi-based+Pb ceramics ////Pat.No.2009-221096 //// NGK2

BNT-BKT-BT ////Pat.No.2010-150126 ////NGK (NIHON GAISHI)3

BNT-BKT-BT //// Pat.No.2011-201741 //// NGK4

>>>>Pat.No.Heisei 11-180769 //// NISSAN MOTOR Co.,Ltd.

Bi0.5Na0.5TiO3- BaTiO3-CaTiO3 - Ba(Zn1/3Nb2/3)O3 +Y2O3, MnO, //// kp=0.216, Qm=520

>>>>Pat.No.2002-160967 //// Matsushita Electric Industrial Co., Ltd.1

(1-v)[(Li1-yNay)zNbO3]-v[Bi0.5Na0.5TiO3, (1-v-x)[(Li1-yNay)zNbO3]-xLMnO3-v[Bi0.5Na0.5TiO3]

>>>>k= ? //// Pat.No.2002-154872 //// Matsushita Electric Industrial Co., Ltd.2

Bi0.5Na0.5TiO3 based polymer composit //// Pat.No.2007-17421 //// Matsushita Electric Industrial Co., Ltd3.

BNT-BT-based composit ////Pat.No.2009-192231 //// PANASONIC4

BNT-BT-based composit ////Pat.No.2009-192455 //// PANASONIC5

xBi0.5Na0.5TiO3-y(MNbO3)-(Z/2)(Bi2O3-Sc2O3) ( M = K, Na) //// k33 = 0.46

>>>>Pat.No.Heisei 10-324569 //// TDK1

BNT-BKT-Bi(Mg2/3Ta1/3)O3 //// kp= 0.305 //// 2005-082422 //// TDK2

[(Bi0.5Na0.5)xMy]z(TiuNv)O3 (M=Ba, Mg, Ca, Sr, (Bi0.5K0.5)) (N=Zr, Hf) /// kp=0.275 /// 2001-294482 /// TDK3

[(Bi0.5Na0.5)xMy]z(TiuNv)O3 (M=Ba, Mg, Ca, Sr, (Bi0.5K0.5), others ) (N=Zr, Hf, others) //// kp=0.275

>>>>Pat.No. 2001-47063 //// TDK4

BNT-BKT-BT-CT-NaNbO3 //// kp=0.43 //// Pat.No. 2002-220280 //// TDK5

BNT-BKT-Bi(Ni,Ti)O3 //// k31=0.203, d31= -65.8 //// Pat.No. 2002-265262 //// TDK6

BNT-BKT-Bi(Ni,Ti)O3 //// kp=0.290 //// Pat.No. 2005-041753 //// TDK 7

BNT-BKT-BT, BNT-BT-ST //// kp=0.362 //// Pat.No. 2002-326870 //// TDK8

BNT-BKT-BT, BNT-BKT-AgNbO3 //// kp=0.299 //// Pat.No. 2002-321975 //// TDK9

BNT-BKT-BT //// kp=0.344 //// Pat.No. 2002-321976 //// TDK10

BT-BKT /// kp=0.33 /// Pat.No. 2003-81675 /// TDK11

BNT-BT-Bi(Fe0.5Ti0.5)3 /// kp=0.366 /// Pat.No. 2005-047745 /// TDK12

BNT-BKT-Bi(Zn0.5Zr0.5)O3 /// kp=0.362 /// Pat.No. 2005-047746 /// TDK13

BNT-BKT-Bi(Fe0.5Ta0.5)O3 /// kp=0.341 /// Pat.No. 2005-047747 /// TDK14

BNT-BKT-Bi(M1,M2)O3 /// kp=? /// Pat.No. 2005-047748 /// TDK15

BNT-BKT, BNT-BT-based //// Pat.No.2008-239380 //// TDK16

BNT-BKT-based //// Pat.No.2008-239388 //// TDK17

BNT-BKT-B2T d33=123 //// Pat.No.2013-155079 //// TDK18

BNT-BiCoO3 /// Pat.No.2013-179260 TDK19

BNT-BKT-BiMeO3 /// Pat. No. 2014-209554  /// TDK20

Bi0.5K0.5TiO3 (BKT) //// kp=0.404 ( after oriented treatment, RTGG method )

>>>>Pat.No.Heisei 11-60333 //// TOYOTA CRDL., INC.1

Bi0.5Na0.5TiO3- (1-x)ABO3 //// kp=0.22 ( RTGG method )

>>>>Pat.No.2001-261435 //// TOYOTA CRDL., INC.2

(Sn, A1-x)(Tix, B1-y)O3 ( A = Bi0.5Na0.5, Bi0.5K0.5 etc. B=Zr, etc.), theory and calculation

>>>>Pat.No.2002-29838 //// TOYOTA CRDL., INC.3

Bi0.5Na0.5TiO3-BaTiO3-BaZrO3 /// d33=147 /// Pat.No.2007-031219 //// TOYOTA MOTOR CORPORATION4

(1-x)Bi0.5Na0.5TiO3- xNaNbO3 //// kp=0.146 //// Pat.No.Heisei 9-100156 //// Nikon Corparation1

BNT-BT-ST //// kp=0.31 //// Pat.No. 2003-201172 //// AIST1

BNT-BT-CT //// Pat.No. 2004-18321 //// AIST2

BT-BLT-BNT ////Pat.No.2009-12997 //// AIST Chubu (BT-BLT-BNT)3

BNT-BT+additives //// Pat.No. 2006-372863 //// Honda electronics1

BNT-BT-(Bi, Na)(Mn,Nb)O3+additives //// Pat.No. 2006-306668 //// Honda electronics2

BNT-BT-Ba(Bi,Nb)O3  //// Pat.No.2007-145644 //// Honda electronics3

BNT-BT-Ba(Mn,Nb)O3  //// Pat.No.2007-137704 //// Honda electronics4

BKT-BiFeO3////Pat.No.2010-126421 ////SEIKO-EPSON1

BKT-BT and Ink-jet actuators //// Pat.No.2003-289161 //// Seiko-Epson2

BNT-BKT-BT film + inkjet head//// Pat.No.2012-15422 //// Seiko-Epson3

BNT-BKT-BT and piezo-trans and piezo-speaker //// d31=70, kp=0.35

>>>>Pat.No.2004-75449 //// TAIYO YUDEN1

BNT-BKT-based //// Pat.No.2008-239482 //// Taiyo-Yuden2

(Na,K)(Bi,La)TiO3 //// kp=0.289 //// Pat.No.2004-182532 //// NIPPON CERAMIC CO.LTD.

BNT-BT-ST////Pat.No.2009-7181 //// Taiheiyo cement1

BNT-BT-ST////Pat.No.2009-7182 //// Taiheiyo cement2

BNT-BT+additive /// Pat.No.2007-238376 /// Taiheiyo cement3

BNT-BT-ST ////Pat.No.2010-150060 ////NIHON CERATEC1

BNT film /// Pat.No. 2005-105295 /// National Institute of Material Science (NIMS)1

BKT, BNT /// Pat.No.2007-088449 /// Hosokawa micron1

BKT-BiFeO3 /// Pat.No.2008-69051 /// Hosokawa micron2

BNT-base? //// Pat.No.2008-192867 //// Fuji film1

BNT-base? //// Pat.No.2008-195603 //// Fuji film2

BNT-based //// Pat.No.2011-181866 //// FUJIFILM3

BNT-BT+Nb2O5////Pat.No.2009-78958 //// Dai-nihon-toryo1

BNT-Ba(Cu,Nb)O3  //// Pat.No.2012-250870 //// Hyogo Pre Univ+ MURATA Manuf.1

BNT-based inkjet head /// Pat. No. 2015-9394 /// KYOCERA1

3< Bi-layered, Tungsten-Bronze, others >  112 candidates

Bi-layered //// Pat.No.2007-269540 //// Fuji film1

Bi-layered//// Pat.No.2007-269603 //// Fuji film2

A2Bi4Ti5O18 (A=Sr,Ca,(Bi0.5Na0.5),(Bi0.5Li0.5),(Bi0.5Li0.5))

>>>>k=? //// Pat.No.2002-226265 //// Kyocera Corporation1

(A1-xBix)2Bi4Ti5O18 (A=Sr,Ca,(Bi0.5Na0.5),(Bi0.5Li0.5),(Bi0.5Li0.5))

>>>>k=? //// Pat.No.2002-226264 //// Kyocera Corporation2

Bi4Ti3O12-x(Sr1-aAa)TiO3 (A=Ba, Bi0.5Na0.5, Bi0.5K0.5, Bi0.5Li0.5) //// k=?

>>>>Pat.No.2002-167276 //// Kyocera Corporation3

Bi4Ti3O12-(Ba, A)TiO3 //// k=?

>>>>Pat.No.2003-34574 //// Kyocera Corporation4

Bi4Ti3O12-x{(Sr1-aA'a)TiO3-ABO3} (A'=Ba, Bi0.5Na0.5, Bi0.5K0.5, Bi0.5Li0.5, A=Bi,Na,K,Li

B=Fe,Nb) //// k=?

>>>>Pat.No.2002-193664 //// Kyocera Corporation5

(A1-xBix)Bi4Ti4O15 (A=Sr,Ba) //// k=? //// Pat.No.2002-160968 //// Kyocera Corporation6

BaBi4Ti4O15 //// k33=0.185 //// Pat.No.2001-19541 //// Kyocera Corporation7

(Sr2-aAa)x(Na1-bKb)y(Nb5-cVc)O15 (A=Mg, Ca, Ba)//// d33 = 80pC / N or more, Tc = 150 deg.C. or more

>>>>Pat.No.Heisei 11-240759 //// Kyocera Corporation8

Sr2NaNb5O15- (Bi0.5A0.5)NaNb5O15 (A = Li, Na, K) //// k33=0.37

>>>>Pat.No.Heisei 11-278932 //// Kyocera Corporation9

SrBi4Ti4O15 //// kp=? //// Pat.No.2000-313662 //// Kyocera Corporation10

xBaBi4Ti4O15- (100-x)Ba4Ti13O30 //// kp=0.10 //// Pat.No.2000-159574 //// Kyocera Corporation11

xSr4Na2Nb10O30-yCa4Na2Nb10O30-zBa2KNb5O15 //// Piezoelectric property? k?

>>>>Pat.No.2000-191373 //// Kyocera Corporation12

(Sr2-aAa)x(Na1-bKb)y(Nb5-cVc)O15 //// k33=0.33 //// Pat.No.Heisei 11-240759 //// Kyocera Corporation13

(Na0.5Bi0.5)1-xMxBi4Ti4O15 //// Piezoelectric property? K?

>>>>Pat.No.2001-158663 //// Kyocera Corporation14

(Sr1-xBax)1-yLnyBi4Ti4O15 (Ln = Rare earth elements ) //// Piezoelectric property? K?

>>>>Pat.No.2001-342061 //// Kyocera Corporation15

(A1-xBix)Bi4Ti4O15 - MnO2 (A = Sr or Ba ) //// Piezoelectric property? K?

>>>>Pat.No.2002-160968 //// Kyocera Corporation16

Bi4Ti3O12 - based //// Piezoelectric property? K?

>>>>Pat.No.2008-179525 //// Kyocera Corporation17

Bi4Ti3O12 - based//// Piezoelectric property? K?

>>>>Pat.No.2008-179532 //// Kyocera Corporation18

Bi4Ti3O12 - based //// Piezoelectric property? K?

>>>>Pat.No.2008-184336 //// Kyocera Corporation19

Bi4Ti3O12+(Bi, Na)TiO3 ////Pat.No.2008-285340 //// Kyocera20

Bi4Ti3O12-based////Pat.No.2009-029668 //// Kyocera21

Bi4Ti3O12-based////Pat.No.2009-051718 //// Kyocera22

Bi4Ti3O12-based////Pat.No.2009-084067 //// Kyocera23

Bi-based////Pat.No.2009-155119 //// KYOCERA24

Bi-layer -based ceramics ////Pat.No.2009-221066 //// KYOCERA25

Bi3Ti4O12+BaTiO3+BiFeO3 ////Pat.No.2010-13295 //// KYOCERA26

Bi3Ti4O12-based ////Pat.No.2010-320814 //// KYOCERA27

Bi3Ti4O12-based ////Pat.No.2010-320832 //// KYOCERA28

Bi3Ti4O12-based ////Pat.No.2010-47465 //// KYOCERA29

Sr2NaNb5O15 //// k33=0.19, d33=112.4pC/N //// Pat.No.2003-20275 //// HITACHI, Ltd.

Bismuth layered structure oxides //// Pat.No.2003-23321 //// Murata Manufacturing Co., Ltd.1

SrBi2(Nb,W)O9 //// k=0.17 //// Pat.No.2003-32073 //// Murata Manufacturing Co., Ltd.2

(Sr1-xM1x)Bi2(Nb1-zWy)2O9 //// kt=0.209 //// Pat.No.2001-181040 //// Murata Manufacturing Co., Ltd.3

(Ca1-xM1x)Bi4Ti4O15 //// kt=0.187 //// Pat.No.2001-181030 //// Murata Manufacturing Co., Ltd.4

SrBi2Nb2O9 //// kt=0.21 //// Pat.No.2001-130961 //// Murata Manufacturing Co., Ltd.5

SrBi2Nb2O9 //// kt=0.20 //// Pat.No.2001-130960 //// Murata Manufacturing Co., Ltd.6

SrBi2Nb2O9 //// k=? //// Pat.No.2004-18359 //// Murata Manufacturing Co., Ltd.7

SrBi2Nb2O9 //// Qmax=19.3 //// Pat.No.2003-183074 //// Murata Manufacturing Co., Ltd.8

SrBi2Nb2O9 //// Qmax=15.5 //// Pat.No.2004-345886 //// Murata Manufacturing Co., Ltd.9

SrBi4Ti4O15 //// kt=0.25 //// Pat.No.2001-192268 //// Murata Manufacturing Co., Ltd.10

SrBi4Ti4O15 //// kt=0.24 //// Pat.No.2001-172078 //// Murata Manufacturing Co., Ltd.11

SrBi4Ti4O15 //// Qmax=25.1 //// Pat.No.2001-328865 //// Murata Manufacturing Co., Ltd.12

SrBi4Ti4O15 //// Qmax=23.1 //// Pat.No.2001-328866 //// Murata Manufacturing Co., Ltd.13

SrBi4Ti4O15 //// kt=0.24 //// Pat.No.2003-002741 //// Murata Manufacturing Co., Ltd.14

CaBi4Ti4O15 //// kt=0.20 //// Pat.No.2001-130956 //// Murata Manufacturing Co., Ltd.15

CaBi4Ti4O15 //// kt=0.205 //// Pat.No.2001-130956 //// Murata Manufacturing Co., Ltd.16

CaBi4Ti4O15 //// Qmax=30.1 //// Pat.No.2002-97073 //// Murata Manufacturing Co., Ltd.17

CaBi4(Ti1-ySiy)4O15 kt=0.21 Pat.No.2001-151087 Murata Manufacturing Co., Ltd. 18

Processing method of Bi-layered perovskite //// k33=0.35

>>>>Pat.No.2001-48647 //// Murata Manufacturing Co., Ltd.19

Piezoelectric devices made by Bi-layered perovskite ceramics //// k33=0.28

>>>>Pat.No.2001-39766 //// Murata Manufacturing Co., Ltd. 20

(1-x)(Ba1-xSrx)Nb2O6-yNaNbO3 //// kt=0.25

>>>>Pat.No.Heisei 10-297969 //// Murata Manufacturing Co., Ltd.21

(1-x)SrBi4Ti4O15 - xBiBi4Ti3FeO15 //// kt=0.245 //// Pat.No.2001-278658 //// TDK1

MBi4Ti4O15 (M=Ca, Ln) /// Pat.No. 2005-162527 /// TDK 2

MBi4Ti4O15 (M=Ba, Sr, Ln) /// Pat.No. 2005-162556 /// TDK3

MBi4Ti4O15 (M=Ba, Sr, Ln) /// Pat.No. 2005-187223 /// TDK4

MBi4Ti4O15 (M=Sr, Ln) /// Pat.No. 2005-187225/// TDK5

MBi4Ti4O15 (M=Ca, Ln) /// Pat.No. 2005-187227 /// TDK6

MBi4Ti4O15 (M=Sr, Ln) /// Pat.No. 2005-187228 /// TDK7

(1-x)BiTiNbO9- xNaBiNbO9 //// k33=0.158 //// Pat.No.Heisei 11-246269 ( Jpn.Pat.No.2942535? ) //// TDK8

(Me1-xLnx)yBiz(Ti1-tMet)O15+a (Ln=lanthanoid, Me=Ca, Ba, Sr, Nb et al.) //// kt=0.229 //// Pat.No.2001-335362 //// TDK9

Ba2Sr0.8Ca0.2Nb2O8-NaNbO3 //// Qm=2470 //// Pat.No. 2002-293628 //// TDK10

(Ba,Sr, La)NaNbO15 //// electronic-induced strain 270pm under 1kV/mm //// Pat.No. 2002-308673 //// TDK11

BIT-SrBIT //// Pat.No.2011-213538 //// TDK12

SrBi2Ta2O9-SrBiNb2O9 (SBTa-SBNb) //// d33=80pC/N //// Pat.No.Heisei 11-100265 //// HITACHI, Ltd.

Sr1-xCaxBi2Ta2O9 (x=0.4-0.9) //// Qm=10000, kp=0.11 //// Pat.No.2002-241175 //// K.SHOJI et al.

(Sr, Ca)NdBi2Ta2O9+Mn //// Qm=16300, kp=0.0946 //// Pat.No.2003-327471 //// TOKO1

(Sm,Bi3)TiNbO9 //// Qm=12500, kt=5.54 //// Pat.No.2004-238263 //// TOKO2

(1-x)SrBi2Nb2O9 - xLnBi2TiNbO9 //// Qm=5440, Tc=461deg.C. //// Pat.No.2004-262693 //// TOKO3

(1-x-y)SrBi2Nb2O9 - xNdBi2TiNbO9 - yBi3TiNbO9//// Qm=3450, K=0.127 //// Pat.No.2006-62955 //// TOKO4

SrBi2Nb2O9 /// Pat.No.2007-67125 /// TOKO5

SrBi2Nb2O9-NdBi2TiNbO9-Bi3TiNbO9 /// Pat.No.2007-217233 /// TOKO6

SrBi2Ta2O9 + rare earth //// Pat.No.2003-176176 //// FPIS-TLO (Tokyo Univ.TLO)

Na0.5-xBi2.5+x/3Ta2O9 //// kp=0.1 //// Pat.No.2003-277148 //// Sakai Chemical Industry Co'ltd.

(Sr1-xMx)(Bi, Nd)(Nb, Ta)2O9 /// kt=0.234, Qm=3740 /// Pat.No.2004-331463 /// Matsushita Electric Industrial Co., Ltd. 1

Bi2(Sr1-xMx)Nb2O9 (M= Y, La) //// kt=0.2, Qm=2000-8000 //// Pat.No.2002-145669 //// Matsushita Electric Industrial Co., Ltd.2

SrBi2Nb2TiO9 //// kt=0.215 //// Pat.No.2003-342065 //// Matsushita Electric Industrial Co., Ltd. 3

Bi2(Sr1-xMx)(Nb,Ta)2O9 /// kt=0.234, Qm=7820 /// Pat.No.2003-192434 /// Matsushita Electric Industrial Co., Ltd.4

(1-x)Bi4Ti3O12- xReMnO3 (Re=Y, Er,...) (BIT-ReMnO3) /// kt=0.25 /// Pat.No.2000-154054 /// Matsushita Electric Industrial Co., Ltd.5

CaMxBi4-xTi4-x(Nb1-aTaa)xO15 (M=Ca, Sr, Ba) /// kp=0.079 /// Pat.No.2001-316177 /// Matsushita Electric Industrial Co., Ltd.6

Bi4(Sr1-xMx)Ti4O15 + MnO2 (M=Y or Cr) /// kt=0.2, Qm=7000 /// Pat.No.2001-154871 /// Matsushita Electric Industrial Co., Ltd.7

(Sr2-xCaxNa)Nb5O15 /// k33=0.41 d33= about 250 pC/N /// Pat.No.Heisei 11-292627 /// NISSAN MOTOR Co.,Ltd.1

(Sr2-xCaxNa)Nb5O15 /// k33=0.41 d33= about 260 pC/N /// Pat.No.2000-169229 /// NISSAN MOTOR Co.,Ltd.2

(Sr2-xCaxNa)Nb5O15 /// d33= 260 pC/N /// Pat.No.2006-143588 /// NISSAN MOTOR Co.,Ltd.3

(Sr2Na)Nb5O15 /// d33 = 167 pC/N /// Pat.No.2004-161532 /// AIST 1

(Sr2-xCaxNa)Nb5O15 /// Piezo.property=?, Spark Plazuma Sintering Method /// Pat.No.2003-63877 /// AIST2

(Sr2-xCaxNa)Nb5O15 - BaNaNb5O15 /// d33=110.5, Spark Prazuma Sintering Method /// Pat.No.2003-128464 /// AIST 3

(Sr2CaNa)Nb5O15 /// d33=167 Sintering temp.=1320 deg.C. /// Pat.No.2003-63877 /// AIST4

(Sr2CaK)Nb5O15 /// d33=120 /// Pat.No.2003-63877 /// AIST5

(Sr2CaNa)Nb5O15 actuator /// Pat.No.2004-251160 /// AIST 6

Crystal oriented Bi-layered perovskite ceramics /// d33=45pC/N /// Pat.No.2001-151567 /// TOYOTA CRDL., INC.1

(Bi2O2)2+(Am-1BmO3m+1)2- (Oriented Bi-layered perovskite ceramics, RTGG method)

/// d33=45pC/N /// Pat.No.2001-34194 /// TOYOTA CRDL., INC.2

SrTiO3-based oriented ceramics /// Piezo.Properties ; Unknown /// Pat.No. 2005-97041 /// Toyota CRDL.,Inc.3

(Bi2O2)2+(Am-1BmO3m+1)2- , (Li,K,Na)(Nb,Ta,Sb)O3 (Oriented Bi-layered perovskite ceramics, RTGG method)

/// d31=108pC/N, kp=0.54/// Pat.No.2006-124251 /// DENSO +TOYOTA CRDL.,INC.1

Bi2O2-(Bi,K,Na)(Nb,Ta)O3 d33=532////Pat.No.2009-246112 //// DENSO2

(Bi2O3)(Bi,K,(Nb,TaNb)O3 //// Pat.No.2010-222185 //// DENSO3

A2+5xBi4-5x(Ti1-xNbx)5O18 (A=Ba,Sr,Ca) /// kp=0.121 /// Pat.No.2001-158662 ///Tokin Corporation1

A2+5xBi4-5x(Ti1-xNbx)5O18 (A=Ba,Sr,Ca) /// kp=0.117 /// Pat.No.2001-302343 /// Tokin Corporation2

A1+4xBi4-4x(Ti1-xNbx)4O15 (A=Ba,Sr,Ca) /// kp=0.119 /// Pat.No.2001-‚P92266 /// Tokin Corporation3

Ba2NaNb5O15/// d33=250 /// Pat.No.2006-32468 /// NEC-Tokin Corporation4

Ba6Ti17O40, RTGG method, others /// k=--- /// Pat.No.2002-193663 /// RICOH Co.,Ltd.

(A1)2(A2)B5O15 piezo-trans /// Qm=3375 /// Pat.No.2004-75448 /// TAIYO YUDEN1

Sr2CaNaNb2O15//// Pat.No.2012-036036 //// Taiyo-Yuden2

Sr,Ca,Na,Nb,MnO+SiO2//// Pat.No.2013-237589 /// Taiyo-Yuden3

Na0.5Bi4.5Ti4O15 //// d33=15pC/N //// Pat.No.2006-169032 //// NGK SPARK PLUG CO., LTD.1

Na0.5Bi4.5Ti4O15 +Co//// d33=30pC/N //// Pat.No.2007-119269 //// NGK SPARK PLUG CO., LTD.2

Tungsten-bronze-based ////Pat.No.2010-53028 //// CANON1

Tungsten Bronz //// Pat.No.2011-184288 //// CANON2

Tungsten Bronz //// Pat.No.2011-184289 //// CANON3

(K,Bi)(Cu,Nb)O3 //// Pat.No.2011-190160 //// Yamanashi Uni.

(Na,Bi) M, Bi, Ti O15 /// Pat..No. 2013-256393 /// FUJI Ceramics1

(Na,Bi) M, Bi, Ti O15 /// Pat..No. 2013-256394 /// FUJI Ceramics2

Bi-layered-based /// Pat. No. 2014-231462 /// FUJI Ceramics3

 

 

4 < Nb-based ceramics >   182 candidates

(Sn,K)(Ti,Nb)O3 //// e33=20.3 C/m2///Pat.No.2008-254961 //// NEC Tokin

NaNbO3-based ceramics /// k15=0.58 /// Pat.No.2003-12371 /// Kyocera Corporation1

KNbO3-NaNbO3-LiNbO3-SrTiO3-BiFeO3//// Pat.No.2007-145650 /// Kyocera Corporation2

KNbO3-NaNbO3-LiNbO3//// Pat.No.2007-261863 /// Kyocera Corporation3

KNbO3-NaNbO3-LiNbO3//// Pat.No.2007-261864 /// Kyocera Corporation4

NaNbO3-BaNb2O6- BiNb3O9 /// frTC =+5 Qm=120 /// Pat.No.2006-182643 /// Kyocera Corporation5

NaNbO3-MnTiO3 /// kp?=0.35 /// Pat.No.2002-137966 /// Kyocera Corporation6

(1-y)NaxNbO3-y(M1-aBia)(Li1-bM2b)Of M1 = K, Na, Li, Ba, Sr, Ca, Mg, M2=Ti, V, Nb, Ta, Sb)

/// Piezoelectric property? k? /// Pat.No.2001-316182 /// Kyocera Corporation7

(LiNbO3-NaNbO3- BaNb2O6)+BiNb3O9 /// Piezoelectric property? k? /// Pat.No.2001-72466 /// Kyocera Corporation8

xLiNbO3-yNaNbO3-zBaNb2O6 /// Piezoelectric property? k? /// Pat.No.2001-172082 /// Kyocera Corporation9

NaNbO3-BaNb2O6- BiNb3O9 /// kt = 0.23 /// Pat.No.2000-281443 /// Kyocera Corporation10

xLiNbO3-yNaNbO3-zMNb2O6 ( M=Ba,Sr,Ca, and Mg ) /// Piezoelectric property? k? ///

>>>>Pat.No.2001-151573 /// Kyocera Corporation11

NaxNbO3-AyBOf (A = K,Na,Li,Bi B=Li,Ti,Nb,Ta,Sb) /// k15=0.38 /// Pat.No.2001-240471 /// Kyocera Corporation12

(1-x)(Na1-aMna)b(Nb1-aTia)O3 - xMbTiO3 (M = (Bi1/2K1/2),Bi1/2Na1/2),(Bi1/2Li1/2), Ba, Sr

/// kt=0.37 /// Pat.No.2002-255641 /// Kyocera Corporation 13

Nb-based ////Pat.No.2010-52977 ////kt=0.52, d33=210/// KYOCERA14

(Li,Na,K)NbO3-Ba(Ca0.5Te0.5)O3 //// Pat.No.2010-195624 //// KYOCERA15

(K,Na,Li)(Nb,Sb)O3-BiNaNbO15 ////d33=350/// Pat.No.2010-275131 //// KYOCERA16

(K,Na,Li)NbO3-Bi(Mg,Nb)O3-Ba(Mg,Nb)O3 //// Pat.No.2011-195381 //// KYOCERA17

(K,Na,Li)NbO3-Bi(Mg,Nb)O3-Ba(Mg,Nb)O3 //// Pat.No.2011-195382 //// KYOCERA18

(K,Na,Li)NbO3-Bi(Mg,Nb)O3-Ba(Mg,Nb)O3 //// Pat.No.2011-195383 //// KYOCERA19

(Li,Na,K)(Nb,Ta,Sb)O3  ///d33=285/// Pat. No. 2014-069988  /// Kyocera20

KNN-based inkjet head /// Pat. No. 2015-9370 /// KYOCERA21

(1-x)[(Li1-yNay)zRO3]- xLMnO3( R=Nb,Ta,Sb, L=Y,Er,Ho,Tm, Lu, Yb) /// High Qm, Freq.constant. is large.///

>>>>Pat.No.2001-114560 /// Matsushita Electric Industrial Co., Ltd.1

(LixNa1-x-yKy)z-2wMa2wNb1-wMbwO3 (Ma=2+ metal A, Mb=3+ metal B) // Kt=? /// Pat.No.2001-342065 /// Matsushita Electric Industrial Co., Ltd.2

(Li1-yNay)zRO3 /// High Qm, Freq.constant. is large. /// Pat.No.2001-114560 /// Matsushita Electric Industrial Co., Ltd.3

(1-x)(Na1-wKw)zRO3 -xLMnO3 /// High Qm, Freq.constant. is large. /// Pat.No.2001-114560 /// Matsushita Electric Industrial Co., Ltd.4

(Na1-wKw)zRO3 /// High Qm, Freq.constant. is large. /// Pat.No.2001-114560 /// Matsushita Electric Industrial Co., Ltd.5

xNa(Nb1-aTaa)O3- yK(Nb1-aTaa)O3-zMBi2(Nb1-aTaa)2O9 /// kp=0.29 /// Pat.No.2001-26480 ///Matsushita Electric Industrial Co., Ltd.6

NN-BT d33=164 ////Pat.No.2009-227535 //// PANASONIC7

NaNbO3-based ceramics ////Pat.No.2009-227534 //// PANASONIC8

K1-xNaxNbO3 /// kp=0.501, Tc=415 deg.C. /// Pat.No.2000-313664 /// TOYOTA CRDL., INC1

K1-xNaxNbO3 /// Pat.No.2006-306678 /// TOYOTA CRDL., INC2

K1-xNaxNbO3 based RTGG ceramics /// Pat.No.2005-272266 /// TOYOTA CRDL., INC3

K1-xNaxNbO3+ Sc2O3 /// kp=0.405, d31=45.7, Qm=172 /// Pat.No.2003-55048 /// TOYOTA CRDL., INC4

[(K1-xNax)1-yAgy]NbO3-z[Ma+][O2-] (M = additve) /// kp=0.447 /// Pat.No.2000-68835 /// TOYOTA CRDL., INC5

Li(K,Na)(Nb,Sb)O3 /// kp=0.48, d31=102.9 /// Pat.No.2003-342069 /// TOYOTA CRDL., INC6

Li(K,Na)(Nb,Ta)O3 /// kp=0.356, d31=47.2 /// Pat.No.2003-342070 /// TOYOTA CRDL., INC7

Li(K,Na)(Nb,Ta,(Mn1/2W1/2))O3 /// kp=0.326, d31=46 /// Pat.No.2003-342071 /// TOYOTA CRDL., INC8

Li(K,Na)(Nb,Ta,Sb)O3 ///d31=166-180 /// Pat.No.2004-300019 /// TOYOTA CRDL., INC9

Li(K,Na)(Nb,Ta,Sb)O3 ///d33=151 /// Pat.No.2006-28001 /// TOYOTA CRDL., INC10

Nb-based////Pat.No.2009-114038 //// DENSO1

Li(K,Na)(Nb,Ta,Sb)O3 /// d31=132.4, kp=0.5/// Pat.No.2004-300012 /// DENSO CORPORATION2

Li(K,Na)(Nb,Ta,Sb)O3 /// d31=120.4, kp=0.531 Tc=415 /// Pat.No.2004-244299 /// DENSO CORPORATION3

Li(K,Na)(Nb,Ta,Sb)O3 /// Pat.No.2004-244300 /// DENSO CORPORATION4

Li(K,Na)(Nb,Ta,Sb)O3 /// Pat.No.2004-244301 /// DENSO CORPORATION 5

Li(K,Na)(Nb,Ta,Sb)O3 /// Pat.No.2004-244302 /// DENSO CORPORATION6

Li(K,Na)(Nb,Ta,Sb)O3 /// Pat.No.2007-204336 (Core-shell structures)/// DENSO CORPORATION7

Li(K,Na)(Nb,Ta,Sb)O3 /// Pat.No.2007-302494 /// DENSO CORPORATION8

(Li,K,Na)(Nb,Ta,Sb)O3 /// Pat.No.2008-162889 /// DENSO CORPORATION9

(Li,K,Na)(Nb,Ta,Sb)O3 /// Pat.No.2008-169113 /// DENSO CORPORATION10

(Li,K,Na)(Nb,Ta,Sb)O3 multilayer ////Pat.No.2010-180121 //// DENSO11

(Li,Na,K)(Nb,Ta,Sb)O3 //// Pat.No.2010-222194 //// DENSO12

(Ag, Li, Na, K)NbO3 /// k33=0.5, d33=66 /// Pat.No.2004-323325 /// Murata Manufacturing Co., Ltd.1

(Ag1-xLix)NbO3 /// k33=0.45 /// Pat.No.2002-68836 /// Murata Manufacturing Co., Ltd.2

(Ag1-xLix)NbO3 +SiO2, MnO/// k33=0.45 /// Pat.No.2006-56778 /// Murata Manufacturing Co., Ltd.3

(Na, Li)NbO3 /// kt=0.46 Qm=2100 /// Pat.No.2004-2051 /// Murata Manufacturing Co., Ltd.4

KNN-based  /// Pat. No. 2014-42047 /// Murata Manuf5.

(1-n)(Na1-xKx)NbO3+nMnNb2O6 /// kr=0.428, Qm=46.5 /// Pat.No.2002-338355 /// TDK1

(1-x-y)NaNbO3-xMTiO3-MNb2O5 /// kr=0.182 /// Pat.No.2002-338351 /// TDK2

(1-x)NaNbO3-x(Ba0.52Sr0.28Ca0.20)2Nb2O7 kr=0.175, Qm=44.07 Pat.No.2002-338352 TDK3

(Na,K,Li)(Nb,Sb)O3+(Nb,Sb)2O6 /// kr=0.435 /// Pat.No.2003-206179 /// TDK4

(Na,K,Li)(Nb,Ta)O3+MTiO3+M(Nb,Ta)2O6 /// kr=0.431 /// Pat.No.2003-221276 /// TDK5

(Na1-x-v-zKxLivAgz)(Nb1-wTaw)O3 /// kp=0.41, d33 = about 240? /// Pat.No.2003-277145 /// TDK6

M1(Nb1-zTaz)O3 /// kp=0.44, d33 = about 270? /// Pat.No.2003-267779 /// TDK7

M1(Nb1-zTaz)O3 /// kp=0.469, d33 = about 430? /// Pat.No.2003-307766 /// TDK8

(Na,K,Li)(Nb1-zTaz)O3+M(Nb,Ta)O2O7 /// kp=0.417, d33 = about 256? /// Pat.No.2003-306379 /// TDK9

(Na,K,Li)(Nb1-zTaz)O3+M(Nb,Ta)O2O7 /// kp=0.49, d33 = about 436? /// Pat.No.2003-327472 /// TDK10

(Na,K,Li)(Nb1-zTaz)O3+MZrO3+M(Nb,Ta)O2O6 /// kp=0.472///Pat.No.2005-179143/// TDK11

(Na,K,Li)(Nb1-zTaz)O3+MTiO3+M(Nb,Ta)O2O6 /// kp=0.472///Pat.No.2005-179144 /// TDK12

(Na,K,Li)(Nb, Ta)O3+Bi2O3, MnCO3 /// k33=0.318///Pat.No.2005-281013 /// TDK13

KNN, BNT-based ceramics ////Pat.No.2009-242161 //// TDK14

KNN?-based ceramics ////Pat.No.2009-242166 //// TDK15

KNN?-based ceramics ////Pat.No.2009-242167 //// TDK16

(K,Na,Li)(Nb,Ta)O3-(Ba,Sr)ZrO3 ////d33=299/// Pat.No.2010-269983 //// TDK17

KLNN-(Ba,Sr)ZrO3  d33=292//// Pat.No.2013-151404 //// TDK18

KNN-SrZrO3 /// Pat. No. 2014-112675 /// TDK19

KNN-based /// Pat. No. 2014-224038 /// TDK20

KNN-based /// Pat. No. 2014-225657 /// TDK21

(Ba, Ca)TiO3-(K,Na)NbO3 /// kp=0.43, kt=0.45 /// Pat.No.2003-252681 /// NEC/Tokin Corporation

(Na,K)(Nb,Ta)O3+Cu /// kp=0.45, Qm=1300 /// Pat.No.2004-115293 /// Noritake Co., Limited

(Li,Na,K)(Nb,Sb)O3 /// kp=0.343 /// Pat.No.2004-155601 /// NIPPON CERAMIC CO.LTD.

Nb-based////Pat.No.2009-102221 //// NGK1

Nb-based////Pat.No.2009-114049 //// NGK2

Nb-based////Pat.No.2009-120443 //// NGK3

Nb-based////Pat.No.2009-132598 //// NGK4

(Ag,Li,Na,K)(Nb,Ta.Sb,V)O3 +additive /// Pat.No.2006-124271 /// NGK INSULATORS,LTD.5

(Li,Na,K)(Nb,Ta)O3 /// Pat.No.2008-156210 /// NGK INSULATORS,LTD.6

Nb-based film /// Pat.No.2008-109072 /// NGK INSULATORS,LTD.7

(Li,Na,K)(Nb,Ta) thin film //// Pat.No.2008-239473 //// NGK INSULATORS,LTD.8

(Li,Na,K)(Nb,Ta)O3 //// Pat.No.2008-260674 //// NGK INSULATORS,LTD.9

KNbO3-NaNbO3-based////Pat.No.2009-046373 //// NGK INSULATORS,LTD.10

Nb-based////Pat.No.2009-167071 //// NGK INSULATORS,LTD.11

Nb-based////Pat.No.2009-184904 //// NGK INSULATORS,LTD.12

Nb-based ////Pat.No.2010-103301 //// NGK INSULATORS,LTD.13

(Li,Na,K)(Nb,Ta,Sb)O3 //// Pat.No.2011-32157 //// NGK INSULATORS,LTD14

(Li,Na,K)(Nb,Ta, Sb)O3 //// Pat.No.2011-37697 //// NGK INSULATORS,LTD15

(Li,Na,K)(Nb,Ta)O3////Pat.No.2009-256182 //// NGK16

Nb-based ////Pat.No.2010-30809 ////d31=112//// NGK17

Nb-based ////Pat.No.2010-30810 //// NGK18

Nb-based ////Pat.No.2010-30818 //// NGK19

Nb-based ////Pat.No.2010-53021//// NGK20

(Li,Na,K)(Nb,Ta,Sb)O3 //// Pat.No.2011-144100 //// NGK INSULATORS,LTD21

(Li,Na,K)(Nb,Ta,Sb)O3 //// Pat.No.2011-144101 //// NGK INSULATORS,LTD22

(Li,Na,K)(Nb,Ta,Sb)-based //// Pat.No.2011-213580 //// NGK23

KNbO3-NaNbO3 +additive /// d33=200, kp=0.415

(Li,Na,K)(Nb,Ta,Sb)O3 //// Pat.No.2011-2521866 //// NGK INSULATORS,LTD24

KNN  //// Pat.No.2013-128002 //// NGK25

KNN  //// Pat.No.2013-128006 //// NGK26

KNN  //// Pat.No.2013-144638 //// NGK27

KNN  actuator /// 2013-189325  /// NGK28

>>>>Pat.No.2005-032762 /// NGK SPARK PLUG Co.,LTD.

KNN-NTK  /// Pat. No. 2014-111529 ///d33=180 /// NTK/NGK2

Li(Na0.5K0.5)1-xNbO3 /// kp=0.44, d33=230 /// Pat.2006-151796 /// Nagoya Institute of Technology1

NbO - based + plastic //// Piezoelectric property? K?///Pat.No.2008-174424 //// Nagoya Insttitute of Technology2

KNN-based material for bio-application //// Pat.No.2011-55985 //// NAGOYA Institute of Technology3

(K,Na)NbO3 d33=125 //// Pat.No.2011-236091 //// Nagoya Institute of Technology4

KN(Nb,Ta)-(Sr, Ca)TiO3 d33=267 //// Pat.No.2011-88786//// NAGOYA University+BROTHER Industry1

(K,Na,Li)NbO3 d33=140 /// Pat.No.2012-131675 ///Nagoya Institute of Technology+Taiyo Yuden1

(Na,K,Bi)(Nb,Ta,Ti)O3+CuO+MnO /// kp=0.44,Qm=2789 /// Pat.2006-315909 /// Nagoya University2+Noritake2

Nb-based (K,Na,Bi)(Nb,Ta,Ti)O3+La d33=200  ////Pat.No.2009-96668 //// Nagoya University3

(K,Na)(Nb,Ta)O3-based  ///d33=297/// Pat. No. 2014-24698 /// Nagoya University4

(Ba,Sr,Ca,Mg)(Na,K)(Ti,Zr,Hf)(Nb,Ta.Sb)O3 /// Pat.No.2006-206429 /// d33=220 /// AIST ( Tsukuba )1

Nb-based ////Pat.No.2010-95404 ////AIST( Tsukuba )2

KNbO3-NaNbO3-LiNbO3-CaTiO3 /// Pat.No.2007-55864 /// AIST ( Nagoya )3

KNbO3-NaNbO3-LiNbO3-SrTiO3 /// Pat.No.2007-55867 /// AIST ( Nagoya )4

NaNbO3-LiNbO3-SrTiO3 /// Pat.No.2008-56549 /// AIST ( Nagoya )5

NaNbO3-BaTiO3-SrTiO3///Pat.No.2008-156172 /// AIST (Nagoya)6

PZT+(K,Na)(Nb,Ta)O3 ( thin films )/// Pat.No.2006-279532 /// Seiko Epson Corporation1

PZT+(K,Na)(Nb,Ta)O3 ( thin films ) /// Pat.No.2006-279713 /// Seiko Epson Corporation2

(K,Na)NbO3 ( thin films )/// Pat.No.2007-184513 /// Seiko Epson Corporation3

(K,Na,Bi)(Mg,Nb)O3 /// Pat.No. 2007-204337 /// Seiko-Epson4

(K,Na,Bi)(In,Nb)O3 /// Pat.No. 2007-204338 /// Seiko-Epson 5

(K,Na,Bi)(Sn,Nb)O3 /// Pat.No. 2007-204339 /// Seiko-Epson 6

(K,Na,Bi)(Zn,Nb)O3 /// Pat.No. 2007-204340 /// Seiko-Epson 7

(K,Na,Bi)(Ni,Nb)O3 /// Pat.No. 2007-204341 /// Seiko-Epson 8

(K,Na)O3 film /// Pat.No. 2007-287918 /// Seiko-Epson9

(K,Na,Li)(Nb,Ta,Sb)+Cr,CaFeO3 ////Pat.No.2010-18514 //// SEIKO-EPSON10

KNN film //// Pat.No.2011-155272 //// Seiko-Epson11

Nb-based film //// Pat.No.2012-139919 //// Seiko-Epson12

Nb-based film //// Pat.No.2012-139923 //// Seiko-Epson13

Nb-based film //// Pat.No.2012-169467 //// Seiko-Epson14

(K,Na)NbO3 film /// Pat. No. 2014-33210 /// Seiko-EPSON15

BaZT-KN-BT film /// Pat. No. 2015-35574 /// Seiko-Epson16

BiNaT-KN-BT film /// Pat. No. 2015-35575 /// Seiko-Epson17

BiNaLiT-NaN film /// Pat. No. 2015-38953 /// Seiko-Epson18

 

Nb-based////Pat.No.2009-117785 //// Hitachi Cable 1

(K,Na,Li)NbO3 ( thin films ) /// d31=100 or more /// Pat.No.2006-291332 /// Hitachi Cable2

(K,Na,Li)NbO3 ( thin films ) /// Pat.No.2007-19302 /// Hitachi Cable 3

(K,Na,Li)NbO3 ( thin films ) /// Pat.No.2007-317853 /// Hitachi Cable4

(K,Na,Li)NbO3 ( thin films ) /// Pat.No.2007-320840 /// Hitachi Cable5

(K,Na,Li)NbO3 ( thin films ) /// Pat.No.2008-127244 /// Hitachi Cable6

(K,Na,Li)NbO3 ( thin films ) /// Pat.No.2008-160092 /// Hitachi Cable7

(K, Na)NbO3 film////Pat.No.2008-270379 //// Hitachi Cable8

(K,Na)NbO3 film//// Pat.No.2008-270514 //// Hitachi Cable9

Nb-based////Pat.No.2009-130182 ////Hitachi Cable10

KNN ////Pat.No.2009-295786 //// HITACHI CABLE11

KNN //// Pat.No.2011-35370 //// Hitachi-Cable12

(K,Na)NbO3 film//// Pat.No.2011-109037 //// Hitachi Cable13

(K,Na)NbO3 film//// Pat.No.2011-129774 //// Hitachi Cable14

(K,Na)NbO3 film//// Pat.No.2011-146623 //// Hitachi Cable15

KNN //// Pat.No.2011-192736 //// Hitachi Cable16

KNN-based //// Pat.No.2011-204887 //// Hitachi Cable17

(K,Na,Li)NbO3 ( thin films ) /// Pat.No.2012-19050 /// Hitachi Cable 18

(K,Na,Li)NbO3 ( thin films ) /// Pat.No.2012-033693 /// Hitachi Cable19

(K,Na,Li)NbO3 ( thin films ) /// Pat.No.2012-059760 /// Hitachi Cable20

(K,Na,Li)NbO3 ( thin films ) /// Pat.No.2012-059851 /// Hitachi Cable21

(K,Na,Li)NbO3 ( thin films ) /// Pat.No.2012-059852 /// Hitachi Cable22

(K,Na,Li)NbO3 ( thin films ) /// Pat.No.2012-059909 /// Hitachi Cable23

(K,Na,Li)NbO3 ( thin films ) /// Pat.No.2012-102382 /// Hitachi Cable24

KNN  //// Pat.No.2012-234925 //// Hitachi Cable25

KNN  //// Pat.No.2012-244090 //// Hitachi Cable26

KNN  //// Pat.No.2012-253109 //// Hitachi Cable27

KNN  //// Pat.No.2012-253243 //// Hitachi Cable28

KNN  //// Pat.No.2013-12710 //// Hitachi Cable29

KNN  //// Pat.No.2013-16776 //// Hitachi Cable30

KNN  //// Pat.No.2013-383222 //// Hitachi Cable31

KNN  //// Pat.No.2013-1499222 //// Hitach Cable32

KNN-based //// Pat.No.2013-251355 /// Hitach Cable33

KNN Film /// Pat. No. 2014-30037 /// Hitachi Cable34

KNN Film /// Pat. No. 2014-56988 /// Hitachi Cable35

KNN Film /// Pat. No. 2014-063825 /// Hitachi Cable36

KNN-based /// Pat. No. 2014-123584 /// Hitachi Metal37

KNN-based /// Pat. No. 2014-187219 /// Hitachi Metal38

KNN-based /// Pat. No. 2014-207393 /// Hitachi Metal39

KNN-based /// Pat. No. 2014-207394 /// Hitachi Metal40

KNN-based /// Pat. No. 2014-207395 /// Hitachi Metal41

 

(Li, Na, K)(Nb,Ta,Sb)O3 /// d31=129/// Pat.No.2008-050178 /// Konica Minolta1

Nb-base multi-layer //// Pat.No.2008-207999 //// Konica-Minolta2

(K,Na,Li)NbO3 /// Pat.No.2008-147682 /// Korea Institute of Machines and Materials

Nb-based ////Pat.No.2010-52999 //// TAIYO-YUDEN1

KNbO3+MeO3 (MnWO3.etc.)////d33=130///Pat.No.2010-215423 //// Nagoya Inst. Tech. +TAIYO YUDEN2

KNN-based multilayer ceramics  //// Pat.No.2013-14470 ////  Taiyo-Yuden3

(Li,Na,K)(Nb,Ta)O3 multilayer  ///d33=240/// Pat. No. 2014-26998  /// Taiyo-Yuden4

(Li,Na,K)(Nb,Ta)O3 multilayer  ///d33*=250/// Pat. No. 2014-43358  /// Taiyo-Yuden5

KNN-based /// Pat. No. 2014-177355 /// Taiyo-Yuden6

KNN-actuator /// Pat. No. 2015-12089 /// Taiyo-Yuden7

Piezo composit //// Pat.No.2011-91371//// FUJIFILM

(K,Na,Li)NbO3 /// Pat.No.2012-106902 ///FUJIFILM

KNN-based //// Pat.No.2011-190147 //// FDK

(Li,K,Na)(Nb,Ta,Sb)O3 //// Pat.No.2012-020918 //// FDK2

KNN-based //// Pat.No.2013-234100 /// Honda electronics1

KNN-based  /// Pat. No. 2014-069467 /// Fuji Ceramics+Toshiba Tec.

 

5< Single crystal, BaTiO3-based, and Others >  68 candidates

{(Bi1/2,Na1/2)1-xA1x}TiO3 ( A1=Ba, Ca, Sr ) ( Single crystal )

>>>>/// Pat.No.2001-97799 /// TOSHIBA CORPORATION1

{(Bi1/2,Na1/2)1-x(Bi1/2, A21/2)xTiO3 (A1=Ba, Ca, Sr, A2=Li, K, Rb) (Single crystal )

>>>>/// Pat.No.2001-97799 /// TOSHIBA CORPORATION2

(Sr,Ba)3TaGa3Si2O14 /// Pat.No.2006-282433 /// NEC/Tokin Corporation1

(Sr,Ba)3Ga2Ge4O14 /// Pat.No.2007-284293 /// NEC/Tokin Corporation2

(Ba,Sr,Ca)(Nb,Ta,W)Ga5(Ge,Si)O14 /// Pat.No.2008-019460 /// NEC/Tokin Corporation3

(Ba,Ca)(Li,Mn,Ti)O3  //// Pat.No.2012-254912 //// NEC-Tokin4

Ca3Ga2Ge4O14 (Single crystal) /// Pat.No.Heisei 11-199234 /// TDK1

La3-xSrxTayGa6-y-zSizO14 (Single crystal) /// Pat.No.2002-348197 /// TDK2

M3NbGa3GSi2O14 (Single crystal, M = alkaline earth metals) /// Pat.No.2002-47099 /// TDK 3

Ba3TaGa3Si2O14 (Single crystal) /// Pat.No.2003-226599 /// TDK4

Langasite (Single crystal) /// Pat.No.2008-133187 /// TDK 5

Ca3Ga3Ge4O14 (Single crystal) /// Pat.No.2003-246698 /// TDK6

BZT-BCT //// Pat.No.2011-181764 //// TDK7

BaTiO3-based //// Pat.No.2011-32111 //// Seiko-EPSON1

BT-base //// Pat.No.2008-195555 //// Seiko Epson2

BaTiO3 film //// Pat.No.2012-144470 //// Seiko-Epson3

BaTiO3+BaO-B2O3 /// Pat. No. 2014-5197 /// Seiko-EPSON4

BaTiO3 Ceramics (Template method)///d33=529 /// Pat.No.2005-255424 /// TOYOTA CRDL., INC1

BaTiO3 Ceramics (Template method)/// Pat.No.2006-137657 /// TOYOTA CRDL., INC2

(Ba,Ca)TiO3 single crystal /// Pat.No. 2008-162828 /// JST, Dr.Fu

(Ba,K)Ti(O,F)3 ceramics /// Pat.No.2007-326768 /// d33=300 /// SHIMANE University

BaTi2O5-based ////Pat.No.2010-103209 //// HITACHI

BaTiO3-based +AD method ////Pat.No.2010-118447 ////NEC-TOKIN1

BaTiO3-(Bi,Na)TiO3-MNbO3 //// Pat.No.2010-241615 //// NEC-TOKIN2

Ba ( Li, Ti ) O3 //// Pat.No.2013-253002 /// NEC-TOKIN+Tohoku-university

Bax(Ti1-yZry)O3 /// k33=0.64 (kp= 0.5?) /// Tc=87-122 deg.C. /// Pat.No.2000-72539 /// Kyocera Corporation1

BT-based /// Pat. No. 2014-185061  /// Kyocera2

BT-BNT (BNT=5-15%)  ///  2013-199398 ///  FDK1

BaTiO3-CaTiO3-CaZrO3//// Pat.No.2013-227212 /// CANON1

BaZT-based  /// Pat. No. 2015-23193 ///d33=140/// YAMAHA+Toyama Pref.1

LiNbO3, LiTaO3 (Single crystal) /// Pat.No.2006-094472 /// Kyocera Corporation 2

LiNbO3, LiTaO3 (Single crystal) /// Pat.No.2006-086699 /// Kyocera Corporation 3

LiNbO3, LiTaO3 (Single crystal) /// Pat.No.2006-086700 /// Kyocera Corporation 4

Bax(Ti1-ySny)O3 multilayered ceramic actuator /// Pat.No.2003-128459 /// Murata Manufacturing Co., Ltd.1

LiNbO3, LiTaO3 (Single crystal) /// Pat.No.2002-305426 /// Murata Manufacturing Co., Ltd. 2

Li(Nb,Ta)O3 (film for SAW device) /// Pat.No.2003-34592 /// Sumitomo Electric industries Co., Ltd.

LiTaO3 single crystal  //// Pat.No.2013-66032 //// Shin-etsu Chemical1

LiTaO3 single crystal //// Pat.No.2013-236276 /// Shin-etsu Chemical2

LiTaO3 single crystal //// Pat.No.2013-236277  /// Shin-etsu Chemical3

 

LiNbO3 +Mo /// Pat.No.2005-343745 /// NEC/Tokin Corporation1

LiNbO3 +W /// Pat.No.2006-103987 /// NEC/Tokin Corporation2

(K3Li2)1-xNaxNb5O15 /// k=0.595 /// Pat.No.2006-89350 /// NEC/Tokin Corporation 3

K3Li2Nb5O15 /// k=0.535 /// Pat.No.2006-62893 /// NEC/Tokin Corporation 4

K3Li2Nb5O15 /// k=0.535 /// Pat.No.2006-62894 /// NEC/Tokin Corporation 5

La3Ga5SiO14 (Single crystal) /// Pat.No.2001-192298 /// Mistubishi Material1

La3Ga5SiO14 (Single crystal) /// Pat.No.2007-176794 /// Mistubishi Material2

La3Ga5.5Ta0.5O14 (Single crystal) substrate, fabrication process, others /// Pat.No.2006-89355 /// Mistubishi Material3

La3Ga5SiO14 (Single crystal) substrate, fabrication process, others /// Pat.No.2001-348299 /// Mistubishi Material4

La3Ga5SiO14iSingle crystal substrate, fabrication process, others /// Pat.No.2002-53393 /// Mistubishi Material5

La3Ga5SiO14iSingle crystal substrate, fabrication process, others /// Pat.No.2004-59404 /// Mistubishi Material6

La3Ga5SiO14 (Single crystal) /// Pat.No.2006-327934 /// Mistubishi Material7

La3Ga5SiO14 and La3Ta0.5Ga5.5SiO14 and La3Nb0.5Ga5.5SiO14 (Single crystal ) substrate,

fabrication process, others /// Pat.No.2002-164765 /// Japan Victor

MgBa(CO3)2 (Single crystal) /// Pat.No.2001-278699 /// Mistubishi Material

ZnO+(Li,Cu,Ag) (Oriented ZnO thin films) /// Pat.No.2001-196895 /// Seiko Epson Corporation1

(Ba1-xM)QTiZ(HfYZr1-Y)OR M=Pb, Ti, Bi, Sn For ferroelectric memory, thin films

>>>>/// Pat.No.2000-274346 /// Seiko Epson Corporation2

(Bi2O2)2+(Am-1BmO3m+1)2- for ferroelectric memory, thin films /// Pat.No.2002-80220 /// Seiko Epson Corporation3

ZnO,AlN, LiTaO3, LiNbO3, KNbO3 for resonator, thin films /// Pat.No.2004-312198 /// Seiko Epson Corporation4

M1M24O(BO3)3 (M1 = rare earth elements, M2 = alkaline earth metals) /// Pat.No.2002-43891 /// Sakai chemical industry Co'ltd.1

NdCa4O(BO3)3 (M1 = rare earth elements, M2 = alkaline earth metals) /// Pat.No.2003-201200 /// Sakai chemical industry Co'ltd.2

KTiNbO3 film on SrTiO3 strate. (Actuator) /// Pat.No.2002-246670 /// Sony Corporation

SAW device /// Pat.No.2005-167969 /// Fujitsu Media Device Corporation

SAW device /// Pat.No.2006-108940 /// TOHOKU University

SiO2 glass + Ge,Ti,Sn oxides /// Pat.No.2005-294557 /// Tama TLO

LaTiO2N ////Pat.No.2010-143789 ////CANON1

BaNbO6-CaNbO6-BiKNbO5 //// Pat.No.2010-275185 //// CANON2

SrTiO3-SnTiO3  //// Pat.No.2012-206864 //// Hitachi Cable

(In,Fe,Ga,Al)ZnO //// Pat.No.2012-207309 //// FUJI FILM

LaGaAlSiO2  //// Pat.No.2013-40093 //// Fukuda single crystal

Polymer+ZnO+V composit /// Pat. No. 2014-11344 ///d33=50/// FUJI FILM

Ca2Al2SiO7 Single crystal for high temperature application //// Pat.No.2014-011327 /// Tokyo Institute of Technology

6 Patents

Table. Newest Patents and Candidates on Lead-Free (Pb-free) Piezoelectric Materials in Japan

-----------------------------------------------------------------------------

Compositions /// Best piezoelectric properties /// Japan patent No. /// Company

-----------------------------------------------------------------------------

(1-y)(Ba1-xSrx)Nb2O6-yNaNbO3 //// kt=0.251 //// d33=53

>>>>Pat.No. 3228175 //// Murata Manufacturing Co., Ltd.

(1-n)(K1-x-yNaxLiv)m(Nb1-zTaz)O3-nM1M2M3O3 //// kp=0.405

>>>>Pat.No. 3259678 //// Murata Manufacturing Co., Ltd.

(1-n)(K1-x-yNaxLiv)m(Nb1-zTaz)O3-nM1M2M3O3 //// kp=0.405

>>>>Pat.No. 3259677 //// Murata Manufacturing Co., Ltd.

(1-n)(K1-x-yNaxLiv)m(Nb1-zTaz)O3-nM1M2M3O3 //// kt=0.49

>>>>Pat.No. 3282576 //// Murata Manufacturing Co., Ltd.

(Na0.5Bi0.5)1-xMxBi4Ti4O15 //// d33=37

>>>>Pat.No. 3244027 //// Murata Manufacturing Co., Ltd.

(1-x)BiaTibNbcO9-xNapBiqNbrO9 /// k33=0.153 /// Qm=1576

>>>>Pat.No. 2942535 //// TDK

The method for recovery of lead compounds from electronic products

>>>>Pat.No.3008940 //// Matsushita Electric Industrial Co., Ltd.

-----------------------------------------------------------------------------------------------------

< For refference > Patents on recovery of lead compounds from electronic products

Pat.No.2000-101161 /// Matsushita Electric Industrial Co., Ltd.

Pat.No.Heisei 9-157767 /// Matsushita Electric Industrial Co., Ltd.

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Patents on Lead-free (Pb-free) Piezoelectric Ceramics in Japan


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