ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,698,718, issued on Aug. 4, was assigned to RTX Corp. (Farmington, Conn.).

"Needled ceramic matrix composite cooling passages" was invented by Tracy A. Propheter-Hinckley (Rocky Hill, Conn.) and Raymond C. Surace (Newington, Conn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for forming a passage in a ceramic matrix composite component incudes forming a core for a ceramic matrix composite component; embedding a hollow member into the core at a desired location for a passage in the ceramic matrix composite component; wrapping the core with a ceramic material; and inserting a rod through the hollow member and into the core."

The patent was filed...