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:
Feb. 04, 2014
Filed:
May. 20, 2008
Applicants:
Toshiya Yamamoto, Tomioka, JP;
Kazuyasu Takada, Tomioka, JP;
Kiyokazu Kojima, Tomioka, JP;
Inventors:
Assignee:
Tanaka Kikinzoku Kogyo K.K., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C23C 8/06 (2006.01); C22C 5/00 (2006.01); C22C 5/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for manufacturing an electric contact material in which a surface layer portion of an alloy containing 1 to 15 mass % of Cu, 0.01 to 0.7 mass % of Ni, and the remainder of Ag and unavoidable impurities is supplied with an amount of oxygen exceeding the amount of oxygen required for internal oxidation of Cu to form an oxygen concentrated layer.