ALEXANDRIA, Va., June 19 -- United States Patent no. 12,335,682, issued on June 17, was assigned to AAC Microtech (Changzhou) Co. Ltd. (Changzhou, China).

"Sound device" was invented by Shasha Liu (Changzhou, China) and Xiaodong Liu (Changzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A sound device includes a sound production unit, a support assembly, a sound absorption material, and a cover plate. The sound production unit includes a vibrating diaphragm, and the vibrating diaphragm is configured to vibrate and sound. The support assembly is fixed to one side, distal from the vibration diaphragm, of the sound production unit. The support assembly and the sound production unit jointly define a so...