ALEXANDRIA, Va., July 14 -- United States Patent no. 12,684,315, issued on July 14, was assigned to NEC Corp. (Tokyo).

"Communication system, communication terminal, communication method, and non-transitory computer-readable medium" was invented by Motoharu Ohtake (Tokyo), Kosei Kobayashi (Tokyo), Hiroaki Aminaka (Tokyo), Shinji Miyazaki (Tokyo) and Tomoaki Nakanishi (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "To provide a communication system capable of easily selecting group communication to participate in halfway. A communication system according to the present disclosure includes a communication terminal and a server that controls group communication among a plurality of communication terminals...