US Patent Issued to AAG Technologies (Nanjing) on Sept. 29 for "Sound-absorbing material block, method for preparing thereof, and electronic device" (Chinese Inventors)

ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,747,189, issued on Sept. 29, was assigned to AAG Technologies (Nanjing) Co. Ltd. (Nanjing, China).

"Sound-absorbing material block, method for preparing thereof, and electronic device" was invented by Zhongyang Wang (Shenzhen, China), Hezhi Wang (Shenzhen, China) and Jie Zhang (Shenzhen, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for preparing a sound-absorbing material block, the method includes steps of mixing raw materials to prepare a mixed paste and filling the mixed paste into a speaker rear cavity of a speaker provided in advance, and then sequentially performing drying treatment and dehydration treatment to obtain the sound-a...