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. 27, 1991
Filed:
Jan. 19, 1990
Applicant:
Inventors:
Katsuhito Yoshida, Itami, JP;
Kazuwo Tsuji, Itami, JP;
Assignee:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ;
U.S. Cl.
CPC ...
428408 ; 148D / ; 156603 ; 156610 ; 156612 ; 156613 ; 156D / ; 156D / ; 20419215 ; 427 38 ; 4272551 ; 428698 ; 428704 ;
Abstract
A composite material useful as a diode capable of operating at a high temperature, i.e., 500.degree. to 600.degree. C. or a semiconductor optical device capable of emitting ultraviolet rays is provided which comprises an electrically insulating single crystal diamond substrate and single crystal cubic boron nitride directly formed on one surface of the single crystal diamond in such a manner that the single crystal cubic boron nitride has the same plane index as the substrate.