ALEXANDRIA, Va., June 6 -- United States Patent no. 12,281,717, issued on April 22, was assigned to COSMO KOKI Co. LTD. (Japan).

"Method of opening fluid control valve and fluid control valve used for the same" was invented by Kensuke Nakazato (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of opening a fluid control valve having a housing externally fitted onto a fluid pipe in a hermetic state and a valve body configured for contacting an inner peripheral surface of a hole of the fluid pipe provided in the housing and an inner peripheral surface of the fluid pipe to hermetically block or open a flow of fluid in the fluid pipe. The method includes a pressure adjustment step of decreasing a pre...