ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,456,339, issued on Oct. 28, was assigned to SUPREMA INC. (Seongnam-si, South Korea).
"Access control method for solving front-to-back ambiguity and device using the same" was invented by Chu Yeonsoo (Gunpo-si, South Korea), Yoon Siwoong (Gwangju-si, South Korea) and Jeon Yongwook (Gwangju-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "An access control device according to an embodiment includes: a communication module configured to perform communication by using a UWB communication protocol and one or more processors, and the communication module includes: a substrate, an antenna disposed on a first surface of the substrate, and a ground...