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:
Apr. 09, 1996
Filed:
Apr. 07, 1994
Applicant:
Inventors:
Kazuhiro Ikuina, Tokyo, JP;
Mitsuru Kimura, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428426 ; 428195 ; 428210 ; 428545 ; 428632 ;
Abstract
A multilayer glass ceramic substrate includes a glass ceramic layer and a plurality of conductive layers laminated via the glass ceramic layer. The glass ceramic layer is composed of inorganic compound consisting of aluminum oxide, borosilicate glass, anorthite crystal and celsian crystal wherein the aluminum oxide is contained in the range of 12 to 59.6 weight percent, the borosilicate glass is contained in the range of 18 to 69.6 weight percent, the anorthite crystal is contained in the range of 1 to 40 weight percent and the celsian crystal is contained in the range of 1 to 5 weight percent so that the total is 100 weight percent.