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:
Oct. 20, 1992
Filed:
Jan. 06, 1992
Sunil C Jha, Attleboro, MA (US);
James A Forster, Barrington, RI (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
Layers of copper and Invar are cold pressure rolled with reduction in thickness to be metallurgically bonded together in interleaved relation, and strips of the bonded materials are cold pressure rolled together a plurality of times with reduction in thickness to be metallurgically bonded together to form a metal composite and to break up the layers of Invar in the composite, thereby to distribute portions of the Invar material in a copper matrix to limit thermal expansion of the composite while permitting the matrix to extend in continuous phase along three mutually perpendicular axes through the composite substantially free of diffusion between the copper and Invar materials.