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:
Jan. 30, 1990
Filed:
Sep. 27, 1988
Applicant:
Inventors:
Yoshihito Inoue, Saitama, JP;
Takashi Yamaguchi, Saitama, JP;
Masashi Saito, Saitama, JP;
Takeshi Inoue, Saitama, JP;
Assignee:
Mitsubishi Mining and Cement Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
501134 ; 501136 ;
Abstract
There is provided a dielectric ceramic composition which is composed mainly of PbTiO.sub.3, Pb(Mg.sub.1/3 Nb.sub.2/3)O.sub.3, and Pb(Fe.sub.2/3 W.sub.1/3)O.sub.3, with 0.5 to 10 mol % of Pb atoms partly replaced by Ba atoms and/or Sr atoms as represented by the formula (I) below.