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:
Oct. 09, 2001
Filed:
Jun. 28, 2000
Applicant:
Inventors:
Yoshihiro Nakai, Osaka, JP;
Kouichi Yamada, Osaka, JP;
Kenji Miyazaki, Osaka, JP;
Shinji Inazawa, Osaka, JP;
Shigeo Ezaki, Osaka, JP;
Toshihiro Kume, Osaka, JP;
Assignee:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23H 1/00 ;
U.S. Cl.
CPC ...
B23H 1/00 ;
Abstract
A wire electrode for wire electro-discharge machining comprises a core, and a coating layer formed on an outer periphery of the core at least a surface layer of which contains copper. The coating layer comprises an alloy of copper and at least one element selected from the group consisting of Zn, Cs, Se, Te and Mg, with the copper content being about 55.5 wt % to about 75 wt %. The coating layer does not have an oxide film thereon other than a natural oxide film.