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.

Date of Patent:
Jul. 01, 2025

Filed:

Dec. 28, 2022
Applicant:

Taiyo Yuden Co., Ltd., Tokyo, JP;

Inventors:

Hirotaro Seino, Tokyo, JP;

Kengo Tsuchiya, Tokyo, JP;

Masahiro Hachiya, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 1/33 (2006.01); H01F 1/147 (2006.01); H01F 1/26 (2006.01); H01F 17/04 (2006.01); H01F 41/02 (2006.01);
U.S. Cl.
CPC ...
H01F 1/33 (2013.01); H01F 1/147 (2013.01); H01F 1/26 (2013.01); H01F 17/04 (2013.01); H01F 41/0246 (2013.01); H01F 2017/048 (2013.01);
Abstract

A magnetic composite body contains a first metal magnetic particle and a second metal magnetic particle, and fine particles are in contact with the first and second metal magnetic particles. The fine particles are insulating and non-magnetic particles. A first oxide film is provided on the surface of the first metal magnetic particle, and a second oxide film is provided on the surface of the second metal magnetic particle. The fine particles may be provided on a surface of the first metal magnetic particles and separated from each other. The fine particles are insulating and non-magnetic and may include first fine particles. Optionally, first and second fine particles, or hydrophobically treated SiO2 particles, may be provided.


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