ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,556,859, issued on Feb. 17, was assigned to SHENZHEN SHOKZ Co. LTD. (Shenzhen, China).

"Headphones" was invented by Lei Zhang (Shenzhen, China), Junjiang Fu (Shenzhen, China), Zhen Wang (Shenzhen, China), Fengyun Liao (Shenzhen, China) and Xin Qi (Shenzhen, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Embodiments of the present disclosure disclose a headphone including a first acoustic wave generation structure, a second acoustic wave generation structure, an acoustic transmission structure, and a filtering structure. The first acoustic wave generation structure and the second acoustic wave generation structure respectively generate a first acou...