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:
Jan. 19, 2010
Filed:
Sep. 26, 2006
Applicants:
Makoto Murai, Isehara, JP;
Ryosuke Usui, Ichinomiya, JP;
Yasuhiro Kohara, Gifu-ken, JP;
Inventors:
Assignee:
Sanyo Electric Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05K 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A circuit device having superior mechanical strength at the interface between a circuit board and heat sink and superior efficiency for radiating heat from a circuit element to the heat sink through the circuit board. The circuit device includes the metal-based insulation board for installing the circuit element, and the heat sink, over which the insulation board is installed with a paste arranged therebetween. The insulation board has a projection arranged on the surface facing the heat sink along a peripheral portion. At least part of the projection contacts the heat sink through the paste layer.