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, 2019

Filed:

Apr. 10, 2017
Applicant:

Tdk Corporation, Tokyo, JP;

Inventors:

Tsutomu Kobayashi, Tokyo, JP;

Toshio Tomonari, Tokyo, JP;

Emi Ito, Yamagata, JP;

Yuma Koyama, Tokyo, JP;

Assignee:

TDK CORPORATION, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 27/28 (2006.01); H01F 27/24 (2006.01); H03H 1/00 (2006.01); H01F 17/04 (2006.01); H01F 19/04 (2006.01);
U.S. Cl.
CPC ...
H01F 27/2823 (2013.01); H01F 17/045 (2013.01); H01F 19/04 (2013.01); H01F 27/24 (2013.01); H03H 1/00 (2013.01); H01F 2027/2838 (2013.01); H03H 2001/005 (2013.01); H03H 2001/0092 (2013.01);
Abstract

Disclosed herein is a differential mode filter including a core including a winding core part, a first wire wound around the winding core part in a first winding direction, and a second wire wound around the winding core part in a second winding direction opposite to the first winding direction. The winding core part includes first and second winding surfaces. A first crossing angle between the first and second wires that cross a plurality of times on the first winding surface is smaller than that a second crossing angle between the first and second wires that cross a plurality of times on the second winding surface.


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