ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,521,618, issued on Jan. 13.

"Communication system for athletes or hearing-impaired users" was invented by Corina Chen (Fremont, Calif.), Krithik Duvvuri (Tracy, Calif.), Eesha Sanjay (Dublin, Calif.), Zhilu Xie (San Ramon, Calif.), Varshini Vijay (Dublin, Calif.) and Ziyi Gao (Pleasanton, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A communication system for athletes or hearing-impaired users is disclosed. The communication system includes a triggering device having a housing to receive an electronic whistle, such that a switch cap snaps on a whistle switch to align with a triggering switch. A main switch sandwiches the triggering switch with ...