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:
Oct. 27, 2026
Filed:
Apr. 27, 2023
Tokin Corporation, Shiroishi, JP;
TOKIN CORPORATION, Shiroishi, JP;
Abstract
An antenna device includes a circuit board, a coil antenna and a resonance circuit. The circuit board has a conductive portion with a flat shape. The conductive portion is formed with an opening and a slit. The slit is coupled with the opening. The coil antenna is mounted on the circuit board so that the coil antenna at least overlaps with the opening when the coil antenna is viewed along an up-down direction perpendicular to the circuit board. The coil antenna includes a coil and a magnetic core. The magnetic core partially forms a magnetic path of the coil. The magnetic core is positioned at a region excluding a specific region which is positioned just below the coil. The magnetic core at least has a center core. The center core is at least partially positioned inside the coil.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile