ALEXANDRIA, Va., March 17 -- United States Patent no. 12,577,913, issued on March 17, was assigned to ROLLS-ROYCE PLC (London).

"Geared gas turbine engine" was invented by Andrea Minelli (Derby, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "A geared gas turbine engine includes a heat management system configured to provide lubrication and cooling to a power gearbox and turbomachinery bearings, and including a pipe assembly adapted to provide a lubricant flow to the power gearbox and turbomachinery bearings to remove the heat generated by the power gearbox and turbomachinery bearings, an air-lubricant heat exchanger to dissipate a first amount of heat, and a fuel-lubricant heat exchanger to dis...