ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,698,743, issued on Aug. 4, was assigned to PRATT & WHITNEY CANADA CORP. (Longueuil, Canada).

"Fuel systems and methods for purging" was invented by Owen Ho-Yin Wong (Markham, Canada), John Galas (Mississauga, Canada) and Sean Durand (Brossard, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "A fuel system can include a first fuel circuit, a second fuel circuit, and an inert gas purge system operatively connected to both the first fuel circuit and the second fuel circuit to purge at least a portion of either or both of the first and/or second fuel circuit. The first fuel can be a liquid fuel and the second fuel can be a gaseous fuel. The first fuel c...