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:
Jan. 20, 1981
Filed:
Dec. 20, 1978
Applicant:
Inventor:
Akira Shibata, Yokohama, JP;
Assignee:
Chugai Denki Kogya Kabushiki-Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ; B32B / ;
U.S. Cl.
CPC ...
428614 ; 428639 ; 428652 ; 428673 ; 428674 ; 428680 ; 428929 ; 148 315 ;
Abstract
Composite electrical contact composed of a copper base portion clad with a contact portion of Ag-SnO alloy. The contact and base portions are fusion bonded by an interfacial alloy layer of Ag and Cu and an adjacent diffusion layer of Cu as the result of heat-treatment of the contact at the eutectic temperature of Ag and Cu.