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. 21, 2022
Filed:
Aug. 14, 2019
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Ingyu Kim, Daejeon, KR;
Soon Jae Kwon, Daejeon, KR;
Ikjin Choi, Daejeon, KR;
Hyounsoo Uh, Daejeon, KR;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
B22F 9/04 (2006.01); C22C 33/02 (2006.01); B22F 9/20 (2006.01); H01F 1/057 (2006.01); B22F 1/16 (2022.01);
U.S. Cl.
CPC ...
C22C 33/0278 (2013.01); B22F 1/16 (2022.01); B22F 9/04 (2013.01); B22F 9/20 (2013.01); H01F 1/0571 (2013.01); B22F 2009/043 (2013.01); B22F 2201/10 (2013.01); B22F 2301/355 (2013.01); B22F 2998/10 (2013.01); C22C 2202/02 (2013.01);
Abstract
A method of producing a magnetic powder and a magnetic powder is provided. The method of producing a magnetic powder according to an exemplary embodiment of the present disclosure includes: producing an iron powder by a reduction reaction of iron oxide, producing a magnetic powder using a molded body obtained by press molding a mixture including the iron powder, a rare earth oxide, boron, and calcium at a pressure of 22 MPa or more, and coating a surface of the magnetic powder with ammonium fluoride.