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:
Oct. 07, 2025
Filed:
Nov. 01, 2021
Applicant:
Shin-etsu Chemical Co., Ltd., Tokyo, JP;
Inventors:
Assignee:
SHIN-ETSU CHEMICAL CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 41/02 (2006.01); B22F 7/02 (2006.01); B22F 9/04 (2006.01); B22F 9/08 (2006.01); C22C 28/00 (2006.01); H01F 1/057 (2006.01);
U.S. Cl.
CPC ...
H01F 41/0266 (2013.01); B22F 7/02 (2013.01); B22F 9/04 (2013.01); B22F 9/082 (2013.01); C22C 28/00 (2013.01); B22F 2301/45 (2013.01); C22C 2202/02 (2013.01); H01F 1/0577 (2013.01);
Abstract
A rare earth sintered magnet is manufactured by preparing a R-T-X sintered body having a major phase of RTX composition wherein Ris a rare earth element(s) and essentially contains Pr and/or Nd, T is Fe, Co, Al, Ga, and/or Cu, and essentially contains Fe, and X is boron and/or carbon, forming an alloy powder containing 5≤R≤60, 5≤M≤70, and 20<B≤70, in at %, wherein Ris a rare earth element(s) and essentially contains Dy and/or Tb, M is Fe, Cu, Al, Co, Mn, Ni, Sn, and/or Si, and B is boron, disposing the alloy powder on the sintered body, and heat treating the alloy-covered sintered body.