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. 02, 1992
Filed:
Oct. 29, 1990
Toru Tanigawa, Nikko, JP;
Masaaki Kurihara, Nikko, JP;
Yasuji Fujii, Yokohama, JP;
Toshiaki Inaba, Hiratsuka, JP;
The Furukawa Electric Co., Ltd., Tokyo, JP;
Furukawa Special Metal Co., Ltd., Hiratsuka, JP;
Abstract
A fine copper wire for electronic instruments is disclosed which comprises 0.05 to 10 ppm in total amount of either one or not less than two kinds of Ti, Zr, V, Hf, Cr, Ca, Mg, Y and rare-earth elements, 1 to 30 ppm pf oxygen and the remainder of Cu. A method of manufacturing therefor is described wherein the hot rolling is given to the ingot obtained by melting and casting in a nonoxidative atmosphere or in vacuum, then stretch processing and at least once or more times of intermediate annealing are repeated to finish to a fixed diameter of wire, and thereafter annealing is carried out under nonoxidative or reducible atmosphere to obtain desired mechanical characteristics.