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. 20, 2023
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 ...
H01F 1/147 (2006.01); H01F 3/08 (2006.01); H01F 41/02 (2006.01); B01J 2/00 (2006.01);
U.S. Cl.
CPC ...
H01F 1/1475 (2013.01); B01J 2/006 (2013.01); H01F 3/08 (2013.01); H01F 41/026 (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. The insulating layer contains pores, and an area ratio of the pores in a cross section of the insulating layer is 5% or less.