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:
Oct. 22, 2024

Filed:

Feb. 05, 2020
Applicant:

Nitto Denko Corporation, Osaka, JP;

Inventors:

Keisuke Okumura, Osaka, JP;

Yoshihiro Furukawa, Osaka, JP;

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01F 1/24 (2006.01); H01F 17/00 (2006.01); H01F 17/04 (2006.01); H01F 27/28 (2006.01);
U.S. Cl.
CPC ...
H01F 1/24 (2013.01); H01F 17/0006 (2013.01); H01F 17/04 (2013.01); H01F 27/2823 (2013.01); H01F 2017/0066 (2013.01); H01F 2017/048 (2013.01); Y10T 428/32 (2015.01);
Abstract

An inductor includes a wire including a conducting line, and an insulating film disposed on an entire circumferential surface of the conducting line, and a magnetic layer embedding the wire. The magnetic layer contains a magnetic particle. The magnetic layer includes a first layer in contact with the circumferential surface of the wire, a second layer in contact with the surface of the first layer, . . . and the n-th layer (n is a positive number of 3 or more) in contact with the surface of the (n−1)th layer. In the two layers adjacent to each other in the magnetic layer, the relative magnetic permeability of the layer closer to the wire is lower than the relative magnetic permeability of the layer farther from the wire.


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