ALEXANDRIA, Va., March 17 -- United States Patent no. 12,578,094, issued on March 17, was assigned to RTX Corp. (Farmington, Conn.).

"Matrix for ceramic-containing materials" was invented by Evan B Callaway (Goleta, Calif.) and Olivier H Sudre (Glastonbury, Conn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A ceramic-containing material, comprising a substrate comprising a ceramic material; an interface coating layer disposed on the ceramic material; and a crystalline matrix disposed on the interface coating layer, the crystalline matrix being substantially free of an amorphous phase and comprising a boron-doped material having a boron dopant present in an amount of less than approximately 10 atomic weight...