ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,428,756, issued on Sept. 30, was assigned to RTX Corp. (Farmington, Conn.).
"Particle-imbedded serving yarn for CMC applications" was invented by Brendan Lenz (Wethersfield, Conn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of preparing a fibrous preform for use in a ceramic matrix composite comprises coiling a serving yarn around a ceramic tow to form a served tow, the serving yarn comprising a polymer material with embedded ceramic particles, incorporating the served tow into a woven fabric, the woven fabric comprising a plurality of served tows, and removing the polymer material of the serving yarn such that the embedded ceramic particle...