ALEXANDRIA, Va., July 16 -- United States Patent no. 12,668,941, issued on June 30, was assigned to CHINA THREE GORGES Corp. (China).

"Annular anchor recycling instrument and annular anchor recycling method" was invented by Lunbo Luo (Wuhan, China), Changping Sun (Wuhan, China), Bojin Tang (Wuhan, China), Zengjuan Lei (Wuhan, China), Jianping Zeng (Wuhan, China), Zhi Li (Wuhan, China), Xingzheng Zhou (Wuhan, China), Mengchao Li (Wuhan, China), Tong Wang (Wuhan, China), Liyan Fan (Wuhan, China), Yifeng Lin (Wuhan, China), Qiuju Sun (Wuhan, China) and Min Lin (Wuhan, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides an annular anchor recycling instrument and an annular anchor...