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. 07, 2014
Filed:
May. 21, 2010
Applicants:
Daisuke Tanaka, Tokyo, JP;
Masahito Furukawa, Tokyo, JP;
Takeo Tsukada, Tokyo, JP;
Inventors:
Assignee:
TDK Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 41/187 (2006.01); H01L 41/273 (2013.01); C04B 35/495 (2006.01); H03H 9/17 (2006.01); H01L 41/43 (2013.01); H01L 41/083 (2006.01);
U.S. Cl.
CPC ...
H01L 41/273 (2013.01); C04B 2235/80 (2013.01); C04B 2235/3294 (2013.01); H01L 41/1873 (2013.01); C04B 2235/3213 (2013.01); C04B 2235/3215 (2013.01); C04B 2235/768 (2013.01); C04B 2235/3248 (2013.01); C04B 35/495 (2013.01); C04B 2235/3251 (2013.01); C04B 2235/3244 (2013.01); C04B 2235/3203 (2013.01); H03H 9/176 (2013.01); H03H 9/178 (2013.01); H01L 41/43 (2013.01); H01L 41/083 (2013.01); C04B 2235/3201 (2013.01);
Abstract
A piezoelectric ceramic composition including a perovskite-type oxide, wherein the perovskite-type oxide has Na, K, Li, Ba and Sr at the A site and Nb, Ta and Zr at the B site, and has a crystal phase transition in a temperature range of −50 to 150° C., the crystal phase transition being accompanied by an endotherm of no greater than 4 J/g, as well as a piezoelectric elementprovided with a piezoelectric ceramicthat contains the piezoelectric ceramic composition.
Tanaka, Daisuke. (2014). Piezoelectric ceramic composition consisting of a perovskite-type oxide and piezoelectric element (U.S. Patent No. 8853920). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8853920
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile