US Patent Issued to CHINA UNIVERSITY OF PETROLEUM-BEIJING on April 22 for "Underwater-wellhead feeding tool assembly and use method thereof" (Chinese Inventors)

ALEXANDRIA, Va., June 6 -- United States Patent no. 12,281,535, issued on April 22, was assigned to CHINA UNIVERSITY OF PETROLEUM-BEIJING (Beijing).

"Underwater-wellhead feeding tool assembly and use method thereof" was invented by Yanbin Wang (Beijing), Jinduo Wang (Beijing), Deli Gao (Beijing) and Shilin Xin (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present application provides an underwater-wellhead feeding tool assembly and a use method thereof. The device controls a controller to add pressure to an inside of a drive cylinder through a first pipeline via a first port, and to add pressure to a cavity apace between a pressure-bearing cylinder and the drive cylinder through a first branch ...