ALEXANDRIA, Va., April 15 -- United States Patent no. 12,601,486, issued on April 14, was assigned to Rolls-Royce plc (London).

"Hydrogen fuelled gas turbine engine" was invented by Nicholas Grech (Derby, Great Britain), Jacopo Tacconi (Derby, Great Britain) and Chloe J. Palmer (Derby, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "A gas turbine engine is configured to combust hydrogen fuel. The gas turbine engine comprises a fuel system comprising: a fuel pump configured to provide pressurised fuel to a core combustor of the gas turbine engine; a recuperator configured to heat fuel from combustion gases downstream of the core combustor; a fuel turbine downstream in fuel flow of the recuperator...