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:
Apr. 15, 2003
Filed:
Jul. 03, 2002
Applicant:
Inventors:
Assignee:
Murata Manufacturing Co. LTD, , JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 4/108 ; H01L 4/1047 ;
U.S. Cl.
CPC ...
H01L 4/108 ; H01L 4/1047 ;
Abstract
A piezoelectric element includes a plurality of piezoelectric layers which contain a bismuth layer compound as the main component of the piezoelectric ceramic composition. The piezoelectric layers are provided with electrodes containing Pd as a main component so that the piezoelectric layers vibrate. At least one of the electrodes and the piezoelectric ceramic composition contains Ag.