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:
Aug. 27, 2024
Filed:
Jan. 14, 2021
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Yasutaka Matsumoto, Suwa, JP;
Assignee:
SEIKO EPSON CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 41/02 (2006.01); B22F 1/08 (2022.01); B22F 1/102 (2022.01); B22F 1/14 (2022.01); B22F 1/16 (2022.01); B22F 3/16 (2006.01); H01F 1/22 (2006.01);
U.S. Cl.
CPC ...
H01F 41/0246 (2013.01); B22F 1/08 (2022.01); B22F 1/102 (2022.01); B22F 1/14 (2022.01); B22F 1/16 (2022.01); B22F 3/16 (2013.01); H01F 1/22 (2013.01); B22F 2201/03 (2013.01); B22F 2202/01 (2013.01); B22F 2202/11 (2013.01); B22F 2202/13 (2013.01);
Abstract
A method for producing a powder magnetic core includes applying energy to a surface of a soft magnetic powder coated with an insulator, exposing the soft magnetic powder to an atmosphere having an atmospheric pressure dew point of −30° C. or higher and 15° C. or lower, and forming a molded body by pressing the soft magnetic powder at 20 MPa or more and 400 MPa or less.