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:
Sep. 04, 1990
Filed:
Dec. 08, 1988
Applicant:
Inventors:
Nobuyuki Mizunoya, Kanagawa, JP;
Hiroshi Komorita, Kanagawa, JP;
Tadashi Tanaka, Chiba, JP;
Kazuo Matsumura, Kanagawa, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kanagawa, JP;
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428137 ; 428192 ; 428209 ; 428210 ; 428426 ; 428433 ; 428457 ; 428901 ; 174258 ; 361397 ; 361414 ; 228124 ; 228174 ; 228198 ;
Abstract
A joined ceramic-metal composite substrate having a copper sheet directly joined to a ceramic substrate and a method for the production thereof. The composite substrate is characterized by having at least one through hole in the copper sheet which is connected to at least one groove formed at a distance from the edge of the copper sheet on the surface of the copper sheet to be joined to the ceramic substrate.