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. 27, 1984
Filed:
Nov. 22, 1982
Kishio Arita, Musashino, JP;
Toshio Takahashi, Musashino, JP;
Akio Miyoshi, Ichikawa, JP;
Hajime Izumimori, Ichikawa, JP;
Mitsushi Ishida, Tokyo, JP;
Sumitomo Metal Mining Company Limited, Tokyo, JP;
Nippon Telegraph and Telephone Public Corporation, Tokyo, JP;
Nippon Telecommunication Engineering Company Limited, Tokyo, JP;
Abstract
A copper alloy which is high in strength and electroconductivity is manufactured by casting, without chill casting, a copper alloy mass substantially consisting of copper and containing 0.2 to 1.5% by weight of chromium and 0.01 to 0.5% by weight of tin, hot working the cast copper alloy mass, then cooling, not slowly, the hot worked alloy mass without being subjected to any solid solution treatment, further cold working the cooled alloy mass, and thereafter subjecting the cold worked alloy mass to an aging treatment.