ALEXANDRIA, Va., June 12 -- United States Patent no. 12,302,080, issued on May 13, was assigned to SHENZHEN SHOKZ Co. LTD. (Shenzhen, China).

"Bone conduction speaker and compound vibration device thereof" was invented by Xin Qi (Shenzhen, China), Fengyun Liao (Shenzhen, China), Jinbo Zheng (Shenzhen, China), Qian Chen (Shenzhen, China), Hao Chen (Shenzhen, China), Yueqiang Wang (Shenzhen, China) and Haofeng Zhang (Shenzhen, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to a bone conduction speaker and its compound vibration device. The compound vibration device comprises a vibration conductive plate and a vibration board, the vibration conductive plate is set to be the ...