ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,378,749, issued on Aug. 5, was assigned to China Merchants Marine Offshore Research Institute Co. and China Merchants Deepsea Research Institute (Sanya) Co. (Shenzhen, China).
"Environmentally-friendly semi-closed loop deep-sea ore hydraulic lifting system" was invented by Lixin Xu (Shenzhen, China), Xiuzhan Zhang (Shenzhen, China), Hejing Liu (Shenzhen, China) and Jiancheng Liu (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "An environmentally-friendly semi-closed loop deep-sea ore hydraulic lifting system, comprises a water injection pump, a water injection riser, a deep-sea multiple high-pressure silo feeding device, a lifting riser, a...