ALEXANDRIA, Va., June 16 -- United States Patent no. 12,303,257, issued on May 20, was assigned to INNOMOTION INCORPORATION (SHANGHAI) (Shanghai).

"Analysis system and method of joint movement" was invented by Shaobai Wang (Shanghai), Liang Huangfu (Shanghai), Hui Wang (Shanghai), Wener Lv (Shanghai), Xuechen Cai (Shanghai) and Fang Sun (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system for analyzing movement of a joint includes: actual markers positioned around the joint, where space positions of the actual markers track space movement of virtual marker points; an optical tracking device that senses the space positions of the actual markers so as to obtain a space movement data of the actual ...