ALEXANDRIA, Va., July 30 -- United States Patent no. 12,375,843, issued on July 29, was assigned to SONY GROUP Corp. (Tokyo).
"Sound output device" was invented by Hiroaki Fujii (Tokyo), Kentaro Kato (Tokyo) and Tomohiro Ito (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a sound output device including a drive unit that has a sound output section inside and that is formed in an annular shape and an electric unit that has a drive control section inside and that is coupled to the drive unit. A space inside the drive unit is formed as an intake hole that takes in an external sound. The sound output device is attached to an ear with the drive unit inserted into a cavum concha. Accordingly, in ...