ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,467,403, issued on Nov. 11, was assigned to Pratt & Whitney Canada Corp. (Longueuil, Canada).

"Powerplant fuel system utilizing ammonia" was invented by Eric S. Durocher (Boucherville, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method is provided for operating a powerplant. During this method, a hydrocarbon fuel is delivered to a turbine engine for combustion within a combustion chamber of the turbine engine during initial startup operation of the turbine engine. Ammonia is at least partially cracked into hydrogen gas and nitrogen gas. A non-hydrocarbon fuel is delivered to the turbine engine for combustion within the combustion chamber of ...