ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,435,674, issued on Oct. 7, was assigned to PRATT & WHITNEY CANADA CORP. (Longueuil, Canada).

"System and method for operating a turboprop engine" was invented by Nicolas Des Roches-Dionne (Longueuil, Canada), Sylvain Lamarre (Boucherville, Canada) and Alexandre Charest (Montreal).

According to the abstract* released by the U.S. Patent & Trademark Office: "There is provided a method and system for operating a turboprop engine of an aircraft. When a resulting value for Ng is between at least one upper limit and at least one lower limit, the output power is governed as a function of the target power. When the resulting value for Ng is on or outside of the at least one upper limit and the...