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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 12700532 B1

PDFFull Text
Date of Patent:
Aug. 04, 2026

Filed:

Feb. 02, 2023

Common mode filter

Applicant:

Tdk Corporation, Tokyo, JP;

Inventors:

Takeshi Okumura, Tokyo, JP;

Kouji Kawamura, Tokyo, JP;

Hidenori Tsutsui, Tokyo, JP;

Hiroshi Sagawa, Tokyo, JP;

Kenichi Ichinose, Tokyo, JP;

Taichi Hirose, Tokyo, JP;

Hiromu Sakamoto, Tokyo, JP;

Assignee:

TDK Corporation, Tokyo, JP;

Attorney:

Rimon P.C.

Primary Examiner:

Shawki S Ismail

Assistant Examiner:

Joselito S. Baisa

Int. Cl.
CPC ...
H01F 27/28 (2006.01); H01F 27/29 (2006.01); H03H 7/01 (2006.01);
U.S. Cl.
CPC ...
H01F 27/2804 (2013.01); H01F 27/292 (2013.01); H03H 7/0153 (2013.01); H01F 2027/2809 (2013.01);
Abstract

Disclosed herein is a common mode filter that includes: a first conductor layer including a first coil pattern, a first connection pattern, and a first lead-out pattern connecting the first coil pattern and the first connection pattern; and a second conductor layer including a second coil pattern, a second connection pattern, and a second lead-out pattern connecting the second coil pattern and the second connection pattern. The extending direction of the first section of the first lead-out pattern and an extending direction of the second section of the second lead-out pattern are opposed to each other. The first section is longer than the second section. The second coil pattern is larger in diameter than the first coil pattern.

Find Patent Forward Citations

Okumura, Takeshi. (2026). Common mode filter (U.S. Patent No. 12700532). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12700532

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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