ALEXANDRIA, Va., March 31 -- United States Patent no. 12,593,188, issued on March 31, was assigned to GOERTEK INC. (Weifang, China).
"Diaphragm for sound generating devices and preparation method thereof, and sound generating device" was invented by Ting Wang (Weifang, China), Chun Li (Weifang, China) and Qiulin Wei (Weifang, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a diaphragm for sound generating devices and a preparation method thereof, and a sound generating device. The diaphragm for sound generating devices comprises only one layer of a thermoplastic polyester elastomer film, wherein the thermoplastic polyester elastomer is formed by copolymerization of a pol...