ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,776,579, issued on Oct. 27, was assigned to TOKIN Corp. (Shiroishi, Japan).
"Antenna device" was invented by Katsuaki Tamashiro (Sendai, Japan), Norimitsu Hoshi (Sendai, Japan) and Toshiaki Oka (Sendai, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "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 di...