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:
Jul. 11, 2023
Filed:
Aug. 12, 2020
Applicant:
Tdk Corporation, Tokyo, JP;
Inventor:
Takeshi Takahashi, Tokyo, JP;
Assignee:
TDK Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 27/255 (2006.01); H01F 3/08 (2006.01); H01F 1/147 (2006.01); B22F 1/17 (2022.01); H01F 1/24 (2006.01); B22F 1/16 (2022.01); B22F 1/052 (2022.01); B22F 1/10 (2022.01); B82Y 30/00 (2011.01); B82Y 40/00 (2011.01);
U.S. Cl.
CPC ...
H01F 27/255 (2013.01); B22F 1/052 (2022.01); B22F 1/10 (2022.01); B22F 1/16 (2022.01); B22F 1/17 (2022.01); H01F 1/14766 (2013.01); H01F 1/24 (2013.01); H01F 3/08 (2013.01); B22F 2301/35 (2013.01); B22F 2302/30 (2013.01); B22F 2304/10 (2013.01); B82Y 30/00 (2013.01); B82Y 40/00 (2013.01);
Abstract
The dust core comprises a plurality of soft magnetic iron-based particles, a coating layer disposed on each of the surfaces of the soft magnetic iron-based particles, an interstitial layer disposed between the coating layers, and a nanopowder disposed between the soft magnetic iron-based particles. The coating layer is a layer of a compound comprising Fe, Si, O, B and N; and the nanopowder is a powder of a compound comprising O, N and at least one element selected from the group consisting of Fe, Si, Zr, Co, Al, Mg, Mn and Ni.