ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,488,774, issued on Dec. 2, was assigned to Earswitch Ltd. (Great Britain).
"Ultrasound apparatus" was invented by Nicholas Roy Gompertz (Rutland, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus for creating a segregated volume of air, the apparatus including a plurality of ultrasound emitters configured to provide interfering ultrasound outputs at a location remote from the ultrasound emitters. The interfering ultrasound outputs are configured to create a region of modified air pressure of predetermined size, shape and distance from the ultrasound emitters which acts as an air-pressure barrier capable of: affecting transmission ...