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.

Date of Patent:
Oct. 21, 1997

Filed:

Mar. 18, 1996
Applicant:
Inventor:

Steven E Bergerson, St. Louis Park, MN (US);

Assignee:

The Bergquist Company, Minneapolis, MN (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428344 ; 428354 ; 428355 ; 428447 ; 428450 ; 4284735 ; 428901 ;
Abstract

A mechanically conformable thermally conductive interface for use in electrically isolating and thermally connecting printed circuit boards to either beat sinks, metal chasses, or heat spreaders. The interface material utilizes silicone polymers of controlled molecular weight and a surface layer of a pressure sensitive adhesive may be employed. The silicone polymer is filled with a thermally conductive electrically insulative particulate such as alumina and/or boron nitride, with the silicone being prepared as a reaction product of a liquid organosiloxane together with a chain extender such as a hydride terminated polydimethylsiloxane material. A release film such as polyethylene may be utilized as the undersurface layer, if desired.


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