ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,501,213, issued on Dec. 16.

"Howling removal system and method, and computer program therefor" was invented by Minkyoo Joo (Seoul, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "A howling removal system includes an output unit configured to output a detection signal through any one of a plurality of user terminals connected to a voice communication session, each equipped with a microphone; a detection unit configured to detect a combination of user terminals among the plurality of user terminals in which howling occurs based on sound signals collected from the plurality of terminals through the voice communication session; and a control unit...