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. 28, 1992
Filed:
Jul. 25, 1991
Applicant:
Inventors:
Yoshiro Kuromitsu, Saitama, JP;
Hideaki Yoshida, Saitama, JP;
Chuji Tanaka, Saitama, JP;
Hiroto Uchida, Saitama, JP;
Kenji Morinaga, Fukuoka, JP;
Assignee:
Mitsubishi Material Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428336 ; 428698 ; 428699 ; 428702 ;
Abstract
For improvement in heat radiation capability without sacrifice of affinity for a paste, a substrate used for fabrication of a thick film circuit has a multi-level structure having a foundation of an aluminum nitride and a surface film provided on the foundation, and the surface film is formed of an oxygen compound containing silicon atoms.