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:
Jun. 11, 2002
Filed:
Feb. 20, 2001
Applicant:
Inventors:
Osamu Chikagawa, Moriyama, JP;
Naoya Mori, Omihachiman, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B 1/500 ;
U.S. Cl.
CPC ...
B32B 1/500 ;
Abstract
An insulator ceramic composition making it possible to obtain a sintered material which can be fired at low temperature of 1000° C., can be co-sintered with Ag and Cu, exhibits superior mechanical strength, exhibits high Q value and is appropriate for using high frequencies, is provided. The insulator ceramic composition is composed of (A) an MgO—MgAl O ceramic powder, and (B) a glass powder containing silicon oxide in a proportion of about 13 to 50 weight % in terms of SiO , boron oxide in a proportion of about 3 to 60 weight % in terms of B O , and aluminum oxide in a proportion of 0 to about 20 weight % in terms of Al O .