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. 30, 1991
Filed:
Jul. 17, 1989
Applicant:
Inventors:
Assignee:
NGK Insulators, Ltd., Aichi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428209 ; 428210 ; 428324 ; 428426 ; 428428 ; 428446 ; 428454 ; 428702 ; 428901 ; 361397 ;
Abstract
A glass ceramic substrate containing mica and having an electrically conductive film formed thereon includes a bonding layer made of a material including at least silicon oxide, which is formed on a portion of one of the opposite surfaces of the glass ceramic substrate containing mica. The electrically conductive film is formed on the bonding layer and has a major component consisting of at least one element selected from the group consisting of aluminum, tungsten, molybdenum, titanium, tantalum and chromium.