ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,428,692, issued on Sept. 30, was assigned to ArcelorMittal (Luxembourg).

"Resistance spot welded joint and a process for producing a resistance spot welded joint" was invented by Coralie Magar (Schwerdorff, France), Kangying Zhu (Metz, France) and Astrid Perlade (Le Ban Saint-Martin, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "A cold-rolled and heat-treated steel sheet, having a composition comprising, by weight percent: 0.10%less than equal toCless than equal to0.40%, 3.5%less than equal toMnless than equal to8.0%, 0.5%less than equal toSiless than equal to2.5%, 0.003%less than equal toAlless than equal to3.0%, with Si+Alless than=0.8%, 0.00...