ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,497,188, issued on Dec. 16, was assigned to The Boeing Co. (Arlington, Va.).
"Liquid hydrogen feed system for fuel cell powered aircraft" was invented by Daniel A. Watts (Seal Beach, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An aircraft comprises a fuselage; wings; engines connected to the wings; a set of liquid hydrogen tanks; a vent located on the tail on the fuselage; a conduit system connecting the liquid hydrogen tanks to the vent; and a controller. The controller is configured to control the conduit system to remove gaseous hydrogen in the set of liquid hydrogen tanks to travel through the conduit system and exit at the vent in respons...