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. 11, 1989
Filed:
Nov. 25, 1987
Applicant:
Inventors:
Harunobu Sano, Nagaokakyo, JP;
Hiroaki Ichikawa, Nagaokakyo, JP;
Goro Nishioka, Nagaokakyo, JP;
Yukio Sakabe, Nagaokakyo, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
501136 ;
Abstract
A dielectric ceramic composition consists essentially of a main component of a SrTiO.sub.3 --PbTiO.sub.3 --Bi.sub.2 O.sub.3 --TiO.sub.2 --CaTiO.sub.3 system and secondary components of manganese oxides, at least one oxide of rare earth elements selected from the group consisting of Nd, La, Ce, Pr and Sm, and one of complex perovskite compounds expressed by the following general formula: