ALEXANDRIA, Va., March 5 -- United States Patent no. 12,240,618, issued on March 4, was assigned to Safran Aircraft Engines (Paris).

"Turbojet engine fan casing" was invented by Guillaume Glemarec (Paris), Quentin Matthias Emmanuel Garnaud (Paris) and Frederic Dautreppe (Paris).

According to the abstract* released by the U.S. Patent & Trademark Office: "A fan casing for an aircraft bypass turbojet engine includes one single wall configured to form at least one portion of an outer skin of a nacelle. The wall includes at least one reinforcement for stiffening the fan casing. The reinforcement is formed by a portion of the wall forming at least one annular area projecting towards an inside of the nacelle and/or having an overthickness. The r...