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:
Jul. 09, 1996
Filed:
Sep. 15, 1993
Tooru Hirota, Tokyo, JP;
Akira Imai, Kanagawa-ken, JP;
Tomoyuki Kumano, Kanagawa-ken, JP;
Masamitsu Ichihara, Kanagawa-ken, JP;
Yoshikazu Sakai, Ibaraki-ken, JP;
Kiyoshi Inoue, Ibaraki-ken, JP;
Hiroshi Maeda, Ibaraki-ken, JP;
Showa Electric Wire & Cable Co., Ltd., Kanagawa-ken, JP;
General Director of National Research Institute for Metals, Tokyo, JP;
Abstract
A method for producing a Cu--Ag alloy based conductive material containing about 10% to about 20% at % Ag, that involves the steps of continuously casting the alloy into a rod followed by quickly cooling the rod, cold-working the rod to a reduction in area of 80% or more, then heat treating the cold-worked rod at a temperature of 250.degree. C. to 350.degree. C. for 1 hour or more to form a heat-treated rod, and thereafter cold-working the heat-treated rod to a reduction in area of 90% or more as defined based on the cast rod to produce conductive material having a high strength of 700 MPa or more and conductivity of 75% IACA or more.