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:
Apr. 21, 2026
Filed:
Mar. 23, 2022
Tdk Corporation, Tokyo, JP;
TDK CORPORATION, Tokyo, JP;
Abstract
A coil device includes: an inner core including a winding core portion wound by a wire, an upper flange portion with a first end portion on one side of the winding core portion, and a lower flange portion with a second end portion on the other side of the winding core portion; an outer core having an insertion hole and disposed outside the inner core, the inner core being inserted to the insertion hole; and a pair of terminal portions on the outer core, lead portions of the wire connect to the terminal portions. The number of wire turns along a radial direction of the winding core portion is larger on one side of the winding core portion than on the other side, and a wire winding end position is at the first end portion on the one side of the winding core portion with a wire winding start position.