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. 16, 2024

Filed:

Jun. 08, 2021
Applicant:

Tdk Corporation, Tokyo, JP;

Inventors:

Kosuke Kunitsuka, Tokyo, JP;

Keigo Higashida, Tokyo, JP;

Emi Ito, Yamagata, JP;

Assignee:

TDK CORPORATION, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 17/04 (2006.01); H01F 17/00 (2006.01); H01F 27/28 (2006.01); H01F 27/29 (2006.01); H01F 27/30 (2006.01);
U.S. Cl.
CPC ...
H01F 17/045 (2013.01); H01F 27/2828 (2013.01); H01F 27/292 (2013.01); H01F 27/306 (2013.01); H01F 2017/0093 (2013.01);
Abstract

Disclosed herein is a common mode filter that includes a core having a winding core part and first and second wires wound in a same direction around the winding core part. The first and second wires have a first crossing portion at which first turns thereof counted from one ends thereof cross each other and a second crossing portion at which first turns thereof counted from the other ends thereof cross each other. The first and second wires are wound by layer winding in an aligned state with one of the first and second wires positioned in a lower layer and other one thereof positioned in an upper layer in at least parts of the first and second wires between second turns thereof counted from the one ends thereof and second turns thereof counted from the other ends thereof.


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