ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,454,493, issued on Oct. 28, was assigned to RTX Corp. (Farmington, Conn.).
"CVI matrix densification process" was invented by Ying She (Rocky Hill, Conn.), Nitin Garg (Avon, Conn.), Andrew J. Lazur (La Jolla, Calif.) and Olivier H. Sudre (Glastonbury, Conn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed herein is a chemical vapor infiltration method including flowing ceramic precursors through a preform and depositing a matrix material on the preform at a first gas infiltration pressure, increasing the gas filtration pressure to a second gas infiltration pressure, and lowering the gas infiltration pressure to a third gas infiltration pressure ...