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:
Jan. 21, 2025
Filed:
Sep. 13, 2018
Applicant:
Star Group Ind. Co., Ltd, Daegu, KR;
Inventors:
Dong Hwan Kim, Daegu, KR;
Koon Seung Kong, Daegu, KR;
Assignee:
STAR GROUP IND. CO., LTD, Daegu, KR;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F 1/057 (2006.01); B22F 3/12 (2006.01); B22F 9/04 (2006.01); H01F 41/02 (2006.01);
U.S. Cl.
CPC ...
H01F 1/0575 (2013.01); B22F 3/12 (2013.01); B22F 9/04 (2013.01); H01F 41/0266 (2013.01); H01F 41/0293 (2013.01); B22F 2201/10 (2013.01); B22F 2301/45 (2013.01);
Abstract
There is provided a method for manufacturing a rare earth sintered magnet to improve the high temperature demagnetization characteristic of the rare earth permanent magnet, by diffusing a heavy rare earth element to the grain boundary of a sintered magnet to improve the magnetic characteristics based on temperature.