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. 22, 2013
Filed:
Mar. 02, 2011
Applicants:
Masahito Furukawa, Tokyo, JP;
Daisuke Tanaka, Tokyo, JP;
Tadashi Takenaka, Chiba, JP;
Hajime Nagata, Chiba, JP;
Yuji Hiruma, Christchurch, NZ;
Inventors:
Masahito Furukawa, Tokyo, JP;
Daisuke Tanaka, Tokyo, JP;
Tadashi Takenaka, Chiba, JP;
Hajime Nagata, Chiba, JP;
Yuji Hiruma, Christchurch, NZ;
Assignee:
TDK Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 41/187 (2006.01);
U.S. Cl.
CPC ...
H01L 41/1871 (2013.01);
Abstract
A piezoelectric composition includes a compound represented by a general expression BiTiO—SrBiTiOas a main component; and Mn or a Mn compound as an additive. A Mn content is less than 1.0% by mass based on a main component amount.