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:
Feb. 02, 2010
Filed:
Dec. 17, 2004
Takaaki Hira, Kagoshima-ken, JP;
Takeshi Okamura, Kagoshima-ken, JP;
Masaki Terazono, Kagoshima-ken, JP;
Hirotaka Tsuyoshi, Kagoshima-ken, JP;
Ryuusuke Tsuyoshi, Legal Representative, Kagoshima-ken, JP;
Katsushi Sakaue, Kagoshima-ken, JP;
Takaaki Hira, Kagoshima-ken, JP;
Takeshi Okamura, Kagoshima-ken, JP;
Masaki Terazono, Kagoshima-ken, JP;
Hirotaka Tsuyoshi, Kagoshima-ken, JP;
Ryuusuke Tsuyoshi, legal representative, Kagoshima-ken, JP;
Katsushi Sakaue, Kagoshima-ken, JP;
Kyocera Corporation, Kyoto, JP;
Abstract
A laminated piezoelectric device obtained by alternately laminating the piezoelectric layers containing Pb and the conducting layers containing palladium as a conducting component, wherein the piezoelectric layer formed between the two conducting layers has layer regions where Pb and Pd are mixed together in the interfacial portions thereof relative to the conducting layers, the layer regions having a thickness of not larger than 3% of the thickness of the piezoelectric layer. The laminated piezoelectric device is formed by co-firing the Pb-containing piezoelectric layers and the palladium (Pd)-containing layers, the piezoelectric layers therein having a large insulation resistance and good piezoelectric characteristics.