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:
Dec. 01, 1992
Filed:
May. 22, 1991
Applicant:
Inventors:
Setsuo Fujimura, Kyoto, JP;
Masato Sagawa, Nagaokakyo, JP;
Hitoshi Yamamoto, Osaka, JP;
Satoshi Hirosawa, Nagaokakyo, JP;
Assignee:
Sumitomo Special Metals Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B22F / ;
U.S. Cl.
CPC ...
419 11 ; 419 12 ; 419 33 ; 419 57 ; 75243 ; 75244 ; 75254 ; 148101 ; 148105 ; 252 6255 ; 241-3 ; 241 15 ;
Abstract
An (Fe, Co)-B-R tetragonal type magnet having a high corrosion resistance, which has a boundary phase stabilized by Co and Al against corrosion, and which consists essentially of: