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:
Sep. 06, 2011
Filed:
Apr. 14, 2006
Applicants:
Hiroshi Takashima, Yasugi, JP;
Gang Han, Saitama, JP;
Shujiroh Uesaka, Cupertino, CA (US);
Tomonori Ueno, Yasugi, JP;
Inventors:
Hiroshi Takashima, Yasugi, JP;
Gang Han, Saitama, JP;
Shujiroh Uesaka, Cupertino, CA (US);
Tomonori Ueno, Yasugi, JP;
Assignee:
Hitachi Metals, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22F 9/30 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for producing a low-oxygen metal powder, comprising passing a raw metal powder coated by hot melting of a hydrocarbon organic compound through thermal plasma flame composed mainly of an inert gas so as to reduce the content of oxygen in the raw metal powder. Preferably, the obtained metal powder is subjected to heat treatment in vacuum or hydrogen atmosphere. Preferred example of the hydrocarbon organic compound is stearic acid.