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. 02, 2008
Filed:
Jun. 28, 2006
Mitsuru Ohta, Saitama, JP;
Jun Yamazaki, Tokyo, JP;
Kikuo Fujiwara, Kawasaki, JP;
Polymatech Co., Ltd., Tokyo, JP;
Otsuka Electric Co., Ltd., Kanagawa-ken, JP;
Abstract
A heat-radiating structure is equipped with a heat-radiating sheet, a case and exothermic bodies. Heat-radiating sheet is equipped with a graphite sheet, and an electrically insulating elastic layer provided on surface thereof. The average thickness of graphite sheet is 300 μm or less. Elastic layer is formed from an elastic composition containing a particulate heat-conducting filler. The average thickness of elastic layer is 10 to 280 μm. The average particle diameter of the heat-conducting filler is 50% or less of the average thickness of elastic layer. In the elastic composition, the content of the heat-conducting filler is 30% by volume or more, and the content of heat-conducting filler in which the average particle diameter is 95% or more of the average thickness of elastic layer is less than 15% by volume. The free space within case is less than 20% of the volume of case.