ALEXANDRIA, Va., May 19 -- United States Patent no. 12,630,897, issued on May 19, was assigned to ArcelorMittal (Luxembourg).
"Method for producing high-strength steel parts with improved ductility, and parts obtained by said method" was invented by Sebastian Cobo (Ancy-sur-Moselle, France), Christian Allely (Metz, France), Martin Beauvais (Marange Silvange, France), Anis Aouafi (Feves, France) and Emmanuel Lucas (Metz, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for manufacture of a hot-rolled steel sheet which includes: producing a liquid steel to which manganese, silicon, niobium, and chromium are added, the additions being made in a vacuum chamber, then desulfurizing the liquid metal w...