ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,470,861, issued on Nov. 11, was assigned to Sonion Nederland B.V. (Hoofddorp, Netherlands).

"Microphone unit arranged on top of receiver unit nozzle" was invented by Friso Van Noort (Hoofddorp, Netherlands) and Raymond Mogelin (Hoofddorp, Netherlands).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to an acoustical assembly adapted to be inserted into an ear canal, said acoustical assembly comprising a receiver unit adapted to generate sound pressure waves, a microphone unit adapted to detect sound pressure waves inside the ear canal when the acoustical assembly is inserted in the ear canal, and a nozzle comprising a receiver...