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:
Aug. 21, 2001
Filed:
Jul. 27, 2000
Applicant:
Inventors:
Toshiatsu Nagaya, Kuwana, JP;
Hirokatsu Mukai, Kuwana, JP;
Takashi Yamamoto, Chiryu, JP;
Hiroaki Makino, Aichi, JP;
Nobuo Kamiya, Aichi, JP;
Assignee:
Denso Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 4/1187 ;
U.S. Cl.
CPC ...
H01L 4/1187 ;
Abstract
A piezoelectric ceramic composition, having a tetragonal perovskite structure and represented by a general formula Pb,Sr,(Zr,Ti,Sb,Mn,)O,wherein Pb and Sr are assumed to occupy A site, Zr, Ti, Sb and Mn are assumed to occupy B site, and a molar ratio of A site/B site atoms of (a+b)/(c+d+e+f) is more than 1.00 to 1.03, preferably 0.01 to 0.03.