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. 20, 2004
Filed:
Aug. 28, 2002
Applicant:
Inventors:
Masahiro Omachi, Itami, JP;
Akira Fukui, Itami, JP;
Assignee:
Sumitomo Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 2/504 ;
U.S. Cl.
CPC ...
H01L 2/504 ;
Abstract
A heat-dissipating substrate is made of a composite material comprising a first composition primarily composed of aluminum and a second composition primarily composed of silicon carbide and/or silicon The heat-dissipating substrate has a recess in one of its main faces. The main faces have fine unevenness, and the maximum amplitude of the fine unevenness in the depth direction of a main face is smaller than the maximum length in the depth direction of composite particles comprising the first composition and the second composition or particles of the second composition, the particles being exposed at the surface of the main face.