ALEXANDRIA, Va., June 2 -- United States Patent no. 12,647,717, issued on June 2, was assigned to SHENZHEN SHOKZ Co. LTD. (Shenzhen, China).

"Apparatus and methods for bone conduction speaker" was invented by Jinbo Zheng (Shenzhen, China), Fengyun Liao (Shenzhen, China), Lei Zhang (Shenzhen, China) and Xin Qi (Shenzhen, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A bone conduction speaker is provided herein. The bone conduction speaker may include a magnetic circuit component for providing a magnetic field, a vibration component located in the magnetic field, and a case. At least a part of the vibration component may convert an electrical signal into a mechanical vibration signal. The case may inclu...