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. 18, 2022
Filed:
Nov. 28, 2018
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Eunjeong Shin, Daejeon, KR;
Juneho In, Daejeon, KR;
Jinhyeok Choe, Daejeon, KR;
Sangwoo Kim, Daejeon, KR;
Soon Jae Kwon, Daejeon, KR;
Hyounsoo Uh, Daejeon, KR;
Ikjin Choi, Daejeon, KR;
Ingyu Kim, Daejeon, KR;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
C22C 33/02 (2006.01); C22C 38/00 (2006.01); H01F 1/057 (2006.01); B22F 1/142 (2022.01); B22F 1/145 (2022.01); B22F 9/20 (2006.01);
U.S. Cl.
CPC ...
C22C 33/02 (2013.01); B22F 1/142 (2022.01); B22F 1/145 (2022.01); B22F 9/20 (2013.01); C22C 38/005 (2013.01); H01F 1/0571 (2013.01); C22C 2202/02 (2013.01);
Abstract
A method for producing a magnetic powder includes the steps of: mixing neodymium oxide, boron, and iron to prepare a first mixture; adding and mixing calcium to the first mixture to prepare a second mixture; mixing an alkali metal with the second mixture to prepare a third mixture; and placing a carbon sheet on the third mixture, placing silica sand (SiOsand) thereon, and then heating the same to a temperature of 800° C. to 1100° C.