US Patent Issued to CHINA RAILWAY NO. 3 ENGINEERING GROUP on July 8 for "Apparatus for automatically polishing butt weld of ultralong large-diameter pipeline" (Chinese Inventors)

ALEXANDRIA, Va., July 9 -- United States Patent no. 12,350,786, issued on July 8, was assigned to CHINA RAILWAY NO. 3 ENGINEERING GROUP Co. LTD. (Taiyuan, China).

"Apparatus for automatically polishing butt weld of ultralong large-diameter pipeline" was invented by Depeng Sun (Taiyuan, China), Yunlong Li (Taiyuan, China), Yufeng Wu (Taiyuan, China), Jianlin Zhang (Taiyuan, China), Haojun Liu (Taiyuan, China), Jiujun Wang (Taiyuan, China), Ning An (Taiyuan, China), Zhiquan Hu (Taiyuan, China), Haimeng Gao (Taiyuan, China), Zhichun Zhang (Taiyuan, China) and Lin Li (Taiyuan, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus for polishing a butt weld includes a machine frame; a polishing mechani...