ALEXANDRIA, Va., June 17 -- United States Patent no. 12,313,022, issued on May 27, was assigned to General Electric Co. (Evendale, Ohio).

"Gas turbine engine having a heat exchanger located in an annular duct" was invented by Scott Alan Schimmels (Miamisburg, Ohio), Jeffrey Douglas Rambo (Mason, Ohio), Timothy Richard DePuy (Liberty Township, Ohio), Steven B. Morris (Mason, Ohio), Brandon Wayne Miller (Middletown, Ohio), William Joseph Bowden (Cleves, Ohio), Matthew Thomas Beyer (Hartland, Wis.) and Michael Simonetti (Liberty Township, Ohio).

According to the abstract* released by the U.S. Patent & Trademark Office: "A heat exchanger positioned within an annular duct of a gas turbine engine is provided. The heat exchanger extends substant...