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:
Aug. 29, 2000
Filed:
Sep. 26, 1996
Applicant:
Inventors:
Mitsuo Kasori, Kanagawa-ken, JP;
Akihiro Horiguchi, Kanagawa-ken, JP;
Hiroyasu Sumino, Tokyo, JP;
Fumio Ueno, Tokyo, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
428428 ; 501 971 ; 501 974 ; 428432 ; 428336 ; 428216 ; 428469 ; 428472 ; 428697 ; 428698 ; 428699 ; 228122 ;
Abstract
Disclosed are a circuit substrate which comprises a silicon nitride ceramic plate 1 having a thermal conductivity at room temperature of 80 W/mK or more and a metal plate 2 joined to the silicon nitride ceramic plate 1 through a glass layer 3, and a semiconductor device in which the circuit substrate is mounted.