ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,704,189, issued on Aug. 11, was assigned to BEIJING AEROSPACE PETROCHEMICAL TECHNOLOGY & EQUIPMENT ENGINEERING CORPORATION LIMITED (Beijing).

"One-way finish valve suitable for hydrogen-energy handheld torch" was invented by Yunlong Zhang (Beijing), Yingren Ding (Beijing), Yusheng Guo (Beijing), Jianqiang Wang (Beijing) and Zongjie Han (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "A one-way cylinder opening valve suitable for a hydrogen energy handheld torch is provided and includes a valve body, a valve core assembly, a spring, a spring chamber, and a sealing ring. The spring chamber is connected to the valve body, the valve core assembly and...