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. 26, 1988
Filed:
Aug. 04, 1986
Applicant:
Inventors:
Keiichi Kato, Hiratsuka, JP;
Motoo Kumagai, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ; C03C / ; C03C / ;
U.S. Cl.
CPC ...
428138 ; 428209 ; 428210 ; 428212 ; 428901 ; 501-5 ; 501 17 ; 501 18 ; 501 22 ; 501 62 ; 501 74 ;
Abstract
A ceramic comprises therein two or more dielectric portions having different dielectric constants formed by filling of one or more vacant spaces provided within a dielectric porcelain, a semiconductor porcelain as a precursor of said dielectric porcelain or a molded product as a precursor of said semiconductor procelain with one or more kinds of materials capable of becoming to have different dielectric constants from said dielectric porcelain and subsequent calcination.