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. 24, 2004
Filed:
May. 02, 2001
Applicant:
Inventors:
Koki Tokuhara, Hyogo, JP;
Akiyasu Oota, Hyogo, JP;
Tsuyoshi Wada, Wakayama, JP;
Katsumi Okayama, Shiga, JP;
Tomoiku Ohtani, Osaka, JP;
Kunitoshi Kanno, Hyogo, JP;
Assignee:
Sumitomo Special Metals Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22F 3/12 ;
U.S. Cl.
CPC ...
B22F 3/12 ;
Abstract
The method for producing a rare-earth sintered magnet of the present invention includes the steps of: compacting alloy powder for the rare-earth sintered magnet to form a green compact; loading the green compact into a case having a structure restricting a path through which gas flows between the outside and inside of the case, and placing a gas absorbent at least near the path; and sintering the green compact by heating the case including the green compact inside in a decompressed atmosphere.