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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.:

US 6118209 B1

PDFFull Text
Date of Patent:
Sep. 12, 2000

Filed:

Jun. 21, 1999

Piezoelectric ceramic composition and piezoelectric transformer

Applicant:
Inventors:

Kojiro Okuyama, Ikoma, JP;

Toshiyuki Asahi, Osaka, JP;

Masamitsu Nishida, Osaka, JP;

Hiroyuki Hase, Kyoto, JP;

Assignee:

Matsushita Electric Industrial Co., Ltd., Osaka, JP;

Attorney:

Smith, Gambrell & Russell, LLP

Primary Examiner:

Mark O Budd

Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
310358 ; 310359 ; 310366 ; 252 629 ;
Abstract

A piezoelectric ceramic composition represents a composition formula, (Pb.sub.u A.sub.1-u).sub.v {(Zn.sub.1/3 Nb.sub.2/3).sub.w (Sn.sub.1/3 Nb.sub.2/3).sub.x Ti.sub.y Zr.sub.z }.sub.2-v O.sub.3, where the symbol A is at least one component selected from a group consisting of La, Nd, Pr, and Bi, and u, v, w, x, y, and z are within ranges represented by the following Equations, characterized in that 0.1 to 3 mole percent of a Mn compound calculated in terms of MnO.sub.2 is added to said piezoelectric ceramic composition.

Find Patent Forward Citations

Okuyama, Kojiro. (2000). Piezoelectric ceramic composition and piezoelectric transformer (U.S. Patent No. 6118209). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6118209

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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