US Patent Issued to AAG Microtech (Changzhou), Ld. on April 21 for "Earphone core" (Chinese Inventors)

ALEXANDRIA, Va., April 21 -- United States Patent no. 12,610,177, issued on April 21, was assigned to AAG Microtech (Changzhou) Co. Ld. (Changzhou City, China).

"Earphone core" was invented by Ronglin Linghu (Shenzhen, China), Long Zhang (Shenzhen, China) and Xianjie Dong (Shenzhen, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure discloses an earphone core having a frame with a receiving space and a magnet unit and a vibration unit both fixed on the frame. The magnet unit includes a yoke and the first magnet. The vibration unit includes a diaphragm and a coil fixed on the diaphragm; a MEMS tweeter for providing high frequency sound is mounted on the first magnet the MEMS tweeter, ...