IDiyas

For the Inventor, By the Inventor

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.:

US 10573442 B1

PDFFull Text
Date of Patent:
Feb. 25, 2020

Filed:

Jan. 11, 2018

Soft magnetic material, core, and inductor

Applicant:

Tdk Corporation, Tokyo, JP;

Inventors:

Yoshihiro Shinkai, Tokyo, JP;

Masahito Koeda, Tokyo, JP;

Kyotaro Abe, Tokyo, JP;

Assignee:

TDK CORPORATION, Tokyo, JP;

Attorney:

Oliff PLC

Primary Examiner:

Alexandre F Ferre

Int. Cl.
CPC ...
H01F 1/153 (2006.01); H01F 27/255 (2006.01); B22F 1/00 (2006.01); B22F 1/02 (2006.01); B22F 3/02 (2006.01); B22F 3/24 (2006.01); C22C 45/02 (2006.01); H01F 17/04 (2006.01); H01F 1/26 (2006.01); H01F 17/00 (2006.01); H01F 3/08 (2006.01); H01F 27/29 (2006.01);
U.S. Cl.
CPC ...
H01F 1/15383 (2013.01); B22F 1/007 (2013.01); B22F 1/0074 (2013.01); B22F 1/02 (2013.01); B22F 3/02 (2013.01); B22F 3/24 (2013.01); C22C 45/02 (2013.01); H01F 1/15366 (2013.01); H01F 1/26 (2013.01); H01F 3/08 (2013.01); H01F 17/0013 (2013.01); H01F 17/04 (2013.01); H01F 27/255 (2013.01); B22F 2003/248 (2013.01); B22F 2301/35 (2013.01); B22F 2998/10 (2013.01); C22C 2202/02 (2013.01); H01F 27/292 (2013.01);
Abstract

The object of the present invention is to provide the soft magnetic material, the core, and the inductor having high permeability and excellent DC superimposition characteristic. A soft magnetic material comprising a soft magnetic metal powder and a resin, wherein said soft magnetic metal powder is constituted from a particle group α and a particle group β, when IA is a peak intensity of the particle group α, Vα is the volume of the particle group α, IB is a peak intensity of the particle group β, Vβ is the volume of the particle group β, and IC is a minimum intensity present between the particle group α and the particle group β, then an intensity ratio IC/IA satisfies 0.12 or less, and a volume ratio Vα/Vβ is 2.0 or more and 5.1 or less.

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