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:
Jul. 06, 1993
Filed:
Mar. 16, 1992
Hiroshi Kishi, Tokyo, JP;
Hiroshi Saito, Tokyo, JP;
Hisamitsu Shizuno, Tokyo, JP;
Yuji Nishi, Tokyo, JP;
Katsuhiko Arai, Tokyo, JP;
Taiyo Yuden Kabushikigaisha, Tokyo, JP;
Abstract
Disclosed is a ceramic capacitor of a mono-layer structure or a multi-layer structure, which has characteristic X7R (characteristic B) and which is high in reliability in direct current breakdown voltage at 125.degree. C. and small in size. The ceramic capacitor has a dielectric layer and internal electrodes disposed so as to interpose the dielectric layer. The dielectric layer is composed of a sintered body of ceramic particles whose core sections are made mainly of BaTiO.sub.3 and whose shell sections are made from BaTiO.sub.3 in the form of a solid solution composed of an oxide of one or more than one element selected from Mg, Ca, Sr and Zn and an oxide of one or more than one element selected from Sc, Y, Gd, Dy, Ho, Er, Yb, Tb, Tm and Lu.