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:
Nov. 23, 2021
Filed:
Mar. 30, 2017
Applicant:
Diamet Corporation, Niigata, JP;
Inventors:
Hiroaki Ikeda, Saitama, JP;
Kazunori Igarashi, Hitachinaka, JP;
Assignee:
Diamet Corporation, Niigata, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 1/33 (2006.01); B22F 1/02 (2006.01); H01F 1/147 (2006.01); H01F 27/255 (2006.01); H01F 41/02 (2006.01); H01F 1/24 (2006.01); H01F 3/08 (2006.01); B22F 3/24 (2006.01);
U.S. Cl.
CPC ...
H01F 1/33 (2013.01); B22F 1/02 (2013.01); B22F 3/24 (2013.01); H01F 1/14766 (2013.01); H01F 1/24 (2013.01); H01F 3/08 (2013.01); H01F 27/255 (2013.01); H01F 41/0246 (2013.01); B22F 2301/35 (2013.01); B22F 2998/10 (2013.01); C22C 2202/02 (2013.01);
Abstract
The present invention relates to a powder magnetic core with silica-based insulating film having a structure in which a plurality of Fe-based soft magnetic powder particles having surfaces coated with a silica-based insulating film are joined with each other through a grain boundary layer made of the silica-based insulating film. Fe diffused from the Fe-based soft magnetic powder particles is contained in the grain boundary layer and the grain boundary layer contains an oxide of each of Fe and Si or a composite oxide of Fe and Si.