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:
Jul. 03, 2012
Filed:
Mar. 21, 2011
Goushi Tauchi, Tokyo, JP;
Tomohisa Azuma, Tokyo, JP;
Hideaki Sone, Tokyo, JP;
TDK Corporation, Chuo-ku, Tokyo, JP;
Abstract
Provided is a piezoelectric ceramic composition which can increase Qof a resonator and inhibit the resonator from changing its oscillation frequency Funder a low temperature environment. The piezoelectric ceramic composition has a structure represented by the following general formula (1):(PbLnMe)(TiZrMnNb)O  (1)where Ln is a lanthanoid element, Me is an alkaline-earth metal element, α>0, β>0, γ≧0, 0.965≦α+β+γ≦1.000, 0.158≦x≦0.210, y≧0, z≧0, and 1−(x+y+z)>0.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile