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. 20, 1976
Filed:
Jul. 10, 1974
Applicant:
Inventors:
Yasunori Takahashi, Tokyo, JA;
Nobutatsu Yamaoka, Takasaki, JA;
Yoshifumi Yamaoka, Haruna, JA;
Shuichi Kakubari, Shibukawa, JA;
Assignees:
Sony Corporation, BOTH OF, JA;
Taiyo Yuden Co., Ltd., BOTH OF, JA;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01B / ;
U.S. Cl.
CPC ...
252 635 ; 106 733 ;
Abstract
An intergranular insulation type semiconductive ceramic composition comprising a major proportion of strontium titanate (SrTiO.sub.3), a minor amount of niobium oxide (Nb.sub.2 O.sub.5) or tantalum oxide (Ta.sub.2 O.sub.5), a minor amount of either germanium oxide (GeO.sub.2) or zinc oxide (ZnO) and having diffused therein either bismuth oxide (Bi.sub.2 O.sub.3) or a mixture of bismuth oxide, lead oxide (PbO) and boric oxide (B.sub.2 O.sub.3). The material is especially useful as a capacitor.