The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 10, 2018
Filed:
Mar. 11, 2014
Applicant:
Ngk Spark Plug Co., Ltd., Nagoya-shi, Aichi, JP;
Inventors:
Masato Yamazaki, Komaki, JP;
Takayuki Matsuoka, Aichi-ken, JP;
Kazuaki Kitamura, Ise, JP;
Hisashi Kozuka, Ichinomiya, JP;
Hideto Yamada, Komaki, JP;
Toshiaki Kurahashi, Konan, JP;
Yasuyuki Okimura, Inuyama, JP;
Kazushige Ohbayashi, Nagoya, JP;
Takashi Kasashima, Ichinomiya, JP;
Assignee:
NGK SPARK PLUG CO., LTD., Aichi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 41/187 (2006.01); C04B 35/00 (2006.01); C04B 35/495 (2006.01); G01L 23/22 (2006.01); H01L 41/43 (2013.01); H01L 41/113 (2006.01); H01L 41/047 (2006.01); H01L 41/08 (2006.01); H01L 41/09 (2006.01); H03H 9/02 (2006.01);
U.S. Cl.
CPC ...
C04B 35/495 (2013.01); G01L 23/222 (2013.01); H01L 41/047 (2013.01); H01L 41/08 (2013.01); H01L 41/09 (2013.01); H01L 41/1132 (2013.01); H01L 41/187 (2013.01); H01L 41/1873 (2013.01); H01L 41/43 (2013.01); C04B 2235/3201 (2013.01); C04B 2235/3203 (2013.01); C04B 2235/3206 (2013.01); C04B 2235/3208 (2013.01); C04B 2235/3215 (2013.01); C04B 2235/3232 (2013.01); C04B 2235/3234 (2013.01); C04B 2235/3236 (2013.01); C04B 2235/3244 (2013.01); C04B 2235/3251 (2013.01); C04B 2235/3262 (2013.01); C04B 2235/3272 (2013.01); C04B 2235/3279 (2013.01); C04B 2235/3281 (2013.01); C04B 2235/3284 (2013.01); C04B 2235/3293 (2013.01); C04B 2235/3294 (2013.01); C04B 2235/3418 (2013.01); C04B 2235/602 (2013.01); C04B 2235/768 (2013.01); C04B 2235/80 (2013.01); H03H 9/02031 (2013.01);
Abstract
A lead-free piezoelectric ceramic composition includes a first crystal phase made of an alkali niobate/tantalate type perovskite oxide having piezoelectric properties, and a second crystal phase made of an M-Ti—O spinel compound (where the element M is a monovalent to quadrivalent element).