ALEXANDRIA, Va., Feb. 5 -- United States Patent no. 12,215,601, issued on Feb. 4, was assigned to RTX Corp. (Farmington, Conn.).

"Air foil with staggered cooling hole configuration" was invented by Jaime G. Ghigliotty Rosado (Cabo Rojo, Puerto Rico), Brandon W. Spangler (Vernon, Conn.) and Tracy A. Propheter-Hinckley (Rocky Hill, Conn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A turbine blade for a gas turbine engine, including: an airfoil, the having a leading edge, a pressure side, a suction side and a trailing edge; a plurality of internal cooling cavities including a leading edge cavity, a leading edge feed passage, pressure side cooling passages, suction side cooling passages and main body cavities...