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.:
Date of Patent:
Sep. 08, 2026
Filed:
Oct. 20, 2022
Applicant:
Tdk Corporation, Tokyo, JP;
Inventors:
Riku Umeki, Tokyo, JP;
Kiyofumi Fujiwara, Tokyo, JP;
Koki Murata, Tokyo, JP;
Youli Yao, Lincolnshire, IL (US);
Assignee:
TDK CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F 27/28 (2006.01); H01F 17/04 (2006.01);
U.S. Cl.
CPC ...
H01F 17/045 (2013.01); H01F 27/2828 (2013.01);
Abstract
A coil device including a first conductor, a second conductor located inside the first conductor, a first inner core located inside the second conductor, and a second inner core located between the first conductor and the second conductor.