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:
Mar. 07, 1989
Filed:
Oct. 30, 1987
David C DeGree, Burnsville, MN (US);
Herbert J Fick, Northfield, MN (US);
Bruce H Juenger, Northfield, MN (US);
The Bergquist Company, Minneapolis, MN (US);
Abstract
A thermally conductive laminate structure for use as a mounting base and/or chassis attachment member in combination with solid-state electronic devices, the laminate preferably comprising up to five layers including a pair of outer metallic layers disposed on opposite sides of center composite layers of electrically insulative layers separated by an interposed metallic layer. The center insulative layers are films of polyimide(amide) material, with the polyimide(amide) film being filled with a quantity of aluminum oxide, boron nitride, or other suitable particulate solid in an amount ranging from between about 30% and 100% by weight of polyimide(amide) solids. The outer layers are metallic, with the base member being a metallic pad of copper or aluminum, and with the opposed metallic layer being copper and arranged in a printed circuitry pattern or array.