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:
Jun. 02, 2015
Filed:
Jun. 29, 2010
Applicants:
Tadao Nomura, Echizen, JP;
Hiroaki Nagata, Echizen, JP;
Takehisa Minowa, Echizen, JP;
Inventors:
Assignee:
SHIN-ETSU CHEMICAL CO., LTD., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F 1/057 (2006.01); B22F 7/06 (2006.01); C22C 1/10 (2006.01); C22C 28/00 (2006.01); C22C 38/00 (2006.01); C22C 45/00 (2006.01); H01F 41/02 (2006.01); H01F 1/153 (2006.01);
U.S. Cl.
CPC ...
B22F 7/062 (2013.01); B22F 2998/10 (2013.01); B22F 2999/00 (2013.01); C22C 1/1094 (2013.01); C22C 28/00 (2013.01); C22C 38/005 (2013.01); C22C 45/00 (2013.01); H01F 1/0577 (2013.01); H01F 41/0293 (2013.01); H01F 1/15333 (2013.01);
Abstract
A rare earth magnet is prepared by disposing a R-T-B sintered body comprising a RTB compound as a major phase in contact with an R-M alloy powder and effecting heat treatment for causing Relement to diffuse into the sintered body. The alloy powder is obtained by quenching a melt containing Rand M. Rand Rare rare earth elements, T is Fe and/or Co, M is selected from B, C, P, Al, Si, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, Zr, Nb, Mo, Ag, In, Sn, Sb, Hf, Ta, W, Pt, Au, Pb, and Bi.