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:
Oct. 05, 2010
Filed:
Mar. 25, 2008
Applicants:
Masato Yamazaki, Komaki, JP;
Kohei Ito, Komaki, JP;
Yasuhiro Fujii, Komaki, JP;
Katsuya Yamagiwa, Komaki, JP;
Takeshi Mitsuoka, Konan, JP;
Inventors:
Masato Yamazaki, Komaki, JP;
Kohei Ito, Komaki, JP;
Yasuhiro Fujii, Komaki, JP;
Katsuya Yamagiwa, Komaki, JP;
Takeshi Mitsuoka, Konan, JP;
Assignee:
NGK Spark Plug Co., Ltd., Aichi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 41/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
There is provided a piezoelectric ceramic composition that contains Na, Bi, Ti and Co wherein the composition ratio of Na, Bi, Ti and Co in terms of oxides thereof is in the following composition range (1):NaO-BiO-TiO-CoO  (1)where a, b, c and d are mole fractions; 0.03≦a≦0.042; 0.330≦b≦0.370; 0.580≦c≦0.620; 0<d≦0.017; and a+b+c+d=1.