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. 07, 2022
Filed:
Jun. 08, 2020
Applicant:
Sony Corporation, Tokyo, JP;
Inventors:
Masaru Terakawa, Miyagi, JP;
Minoru Yamaga, Miyagi, JP;
Assignee:
SONY CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 1/147 (2006.01); G11B 5/712 (2006.01); H01F 1/09 (2006.01); B05D 3/02 (2006.01); B22F 9/22 (2006.01); G11B 5/706 (2006.01); B22F 1/16 (2022.01); B22F 1/17 (2022.01); B22F 1/054 (2022.01); B22F 1/142 (2022.01); G11B 5/708 (2006.01); G11B 5/842 (2006.01); G11B 5/714 (2006.01); G11B 5/702 (2006.01);
U.S. Cl.
CPC ...
H01F 1/147 (2013.01); B05D 3/0254 (2013.01); B22F 1/054 (2022.01); B22F 1/142 (2022.01); B22F 1/16 (2022.01); B22F 1/17 (2022.01); B22F 9/22 (2013.01); G11B 5/706 (2013.01); G11B 5/708 (2013.01); G11B 5/70642 (2013.01); G11B 5/712 (2013.01); G11B 5/714 (2013.01); G11B 5/842 (2013.01); H01F 1/09 (2013.01); B22F 2302/25 (2013.01); C22C 2202/02 (2013.01); G11B 5/7028 (2013.01);
Abstract
A method for producing a magnetic powder includes performing a reduction treatment on the surface of particles including a hard magnetic material to form core-shell particles each having a shell portion including a soft magnetic material.