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:
Jun. 06, 2006
Filed:
May. 30, 2003
Satoshi Sasaki, Tokyo, JP;
Masaru Abe, Tokyo, JP;
Satoshi Sasaki, Tokyo, JP;
Masaru Abe, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
A multilayer piezoelectric elementcomprising an element bodywherein piezoelectric layersand internal electrode layersandare alternately stacked. The piezoelectric layeris composed of a piezoelectric ceramic. The piezoelectric ceramic includes a compound oxide having a perovskite structure. The compound oxide contains at least lead, zirconium and titanium. The method of producing the piezoelectric element includes the steps of producing a piezoelectric layer ceramic green sheet, forming a pre-fired element body by alternately stacking the produced piezoelectric ceramic green sheets and internal electrode layer precursor layers, and forming said element bodyby performing main firing on the pre-fired element body at a temperature of 1100° C. or lower.