ALEXANDRIA, Va., March 12 -- United States Patent no. 12,247,274, issued on March 11, was assigned to ArcelorMittal (Luxembourg).

"Method of production of a cold rolled and heat treated steel sheet to produce vehicle parts" was invented by Patrick Barges (Rozerieulles, France) and Ian Alberto Zuazo Rodriguez (Saint Vallier, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of production of a cold rolled and heat treated steel sheet has the following steps: providing a cold rolled steel sheet with a composition including the following elements, expressed in percent by weight: 0.15%less than equal tocarbonless than equal to0.6%, 4%less than equal tomanganeseless than equal to20%, 5%less than equal...