ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,457,440, issued on Oct. 28, was assigned to AMOSENSE Co. LTD. (Cheonan-si, South Korea).
"Wireless earphones" was invented by Kiljae Jang (Cheonan-si, South Korea), Wonsan Na (Cheonan-si, South Korea) and Kyunghyun Ryu (Cheonan-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a wireless ear module having a UWB antenna to easily obtain location information of a wireless ear module case and ear modules. The wireless ear module comprises: ear modules for receiving and playing a sound source signal from an electronic device; and a case comprising an upper housing and a lower housing which are rotatably coupled, and for storing the ...