US Patent Issued to AAC Microtech (Changzhou) on Sept. 1 for "Sound-absorbing material, method for preparing same, and speaker using the sound-absorbing material" (Chinese Inventors)

ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,723,807, issued on Sept. 1, was assigned to AAC Microtech (Changzhou) Co. Ltd. (Changzhou, China).

"Sound-absorbing material, method for preparing same, and speaker using the sound-absorbing material" was invented by Zhongyang Wang (Changzhou, China), Jie Zhang (Changzhou, China), Hezhi Wang (Changzhou, China) and Chao Wang (Changzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a sound-absorbing material, a method, and a speaker, a sound-absorbing slurry is frozen by using a freezing conveyor belt, and the sound-absorbing slurry is then molded by a mold or coated onto a film. During pre-cooling of the sound-absorbing slurry in a f...