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. 15, 2024
Filed:
Sep. 24, 2020
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Nakheon Sung, Daejeon, KR;
Ingyu Kim, Daejeon, KR;
Soon Jae Kwon, Daejeon, KR;
Jinhyeok Choe, Daejeon, KR;
Hyounsoo Uh, Daejeon, KR;
Tae Hoon Kim, Daejeon, KR;
Assignee:
LG Chem, Ltd., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 1/057 (2006.01); B22F 1/148 (2022.01); B22F 3/10 (2006.01); B22F 3/24 (2006.01); C22C 38/00 (2006.01); C22C 38/06 (2006.01); C22C 38/16 (2006.01); H01F 41/02 (2006.01); B22F 9/20 (2006.01);
U.S. Cl.
CPC ...
H01F 1/0577 (2013.01); B22F 1/148 (2022.01); B22F 3/1003 (2013.01); B22F 3/24 (2013.01); C22C 38/002 (2013.01); C22C 38/005 (2013.01); C22C 38/06 (2013.01); C22C 38/16 (2013.01); H01F 41/0266 (2013.01); B22F 2003/248 (2013.01); B22F 9/20 (2013.01); B22F 2201/11 (2013.01); B22F 2301/355 (2013.01); C22C 2202/02 (2013.01);
Abstract
A sintered magnet and a method for producing the same are provided. The method includes producing an R—Fe—B-based magnet powder by a reduction-diffusion method, adding a R—Al—Cu powder as a sintering agent to the R—Fe—B-based magnet powder to form a mixed powder, wherein the R—Al—Cu powder is an alloy of R, Al and Cu, and R is Nd, Pr, Dy, Tb or Ce, and sintering the mixed powder to form a sintered magnet.