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:
Sep. 21, 2011
Goushi Tauchi, Tokyo, JP;
Daisuke Tanaka, Tokyo, JP;
Masahito Furukawa, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
According to a preferred embodiment, the piezoelectric ceramic includes a complex oxide having the composition represented by formula (1) or (2), and Mn at 0.2-1.2 mass % or 0.2-3 mass %, respectively, in terms of MnCO.(PbA)TiZr(ZnA)(YbA)SnO  (1)(PbA)TiZr(ZnA)SnO  (2)[In formula (1), Arepresents at least one element selected from the group consisting of Ca, Sr and Ba, and Ais at least one element selected from the group consisting of Nb, Ta and Sb, and includes at least Nb. In formula (2), Arepresents at least one element selected from among Ca, Sr and Ba, Arepresents at least one element selected from among Nb and W, and Aincludes at least Nb.]