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:
Jun. 06, 1989
Filed:
Jun. 14, 1988
Applicant:
Inventors:
James A Bell, Oakville, CA;
Thijs Eerkes, Oakville, CA;
Carlos M Diaz, Mississagua, CA;
William L Mankins, Huntington, WV (US);
Assignee:
Inco Limited, Toronto, CA;
Primary Examiner:
Int. Cl.
CPC ...
G22F / ;
U.S. Cl.
CPC ...
419 23 ; 75246 ; 75247 ; 419 28 ; 419 31 ; 419 32 ; 419 43 ;
Abstract
A method of producing a composite material from a mixture of copper and a low coefficient of thermal expansion nickel-iron alloy (Invar) powder is disclosed wherein advantageously at least part of the copper is deposited on the Invar powder prior to processing. Processing includes cold compacting to a green strip or other configuration, annealing in the temperature range of 550.degree.-750.degree. C. and working the annealed material at a temperature in that range to high density.