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:
Feb. 01, 2022
Filed:
Jul. 10, 2020
Applicant:
Tdk Corporation, Tokyo, JP;
Inventors:
Masataka Kitagami, Tokyo, JP;
Kenichi Kawabata, Tokyo, JP;
Assignee:
TDK CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09D 133/14 (2006.01); C09D 5/00 (2006.01); G02B 1/11 (2015.01); B01J 13/18 (2006.01); C08F 220/32 (2006.01); G02B 5/02 (2006.01); C09K 5/14 (2006.01); H01F 1/24 (2006.01); B22F 1/02 (2006.01); H01F 41/02 (2006.01); H01F 1/33 (2006.01);
U.S. Cl.
CPC ...
H01F 1/24 (2013.01); B22F 1/02 (2013.01); H01F 41/0246 (2013.01); H01F 1/33 (2013.01);
Abstract
Disclosed herein is a composite magnetic powder that includes an iron-containing magnetic powder, and an insulating layer comprising a silicon oxide formed on a surface of the iron-containing magnetic powder. An O/Si ratio of the silicon oxide constituting the insulating layer is 2.1 or more and 2.2 or less.