ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,538,078, issued on Jan. 27, was assigned to SONY GROUP Corp. (Tokyo).
"Edge, speaker unit, microphone, and acoustic processing device" was invented by Naoki Shinmen (Tokyo), Shunsuke Shiomi (Tokyo), Go Igarashi (Tokyo) and Yuta Sato (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "To provide an edge and the like that improve sound quality. The edge includes an edge-shaped portion that is formed from an inner peripheral portion to an outer peripheral portion, and a groove portion that is formed in the edge-shaped portion and has a peak portion and a valley portion, wherein a ridge line of the valley portion of the groove portion extends from a start...