ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,503,743, issued on Dec. 23, was assigned to NIPPON STEEL Corp. (Tokyo).
"Hot-rolled steel sheet" was invented by Genki Abukawa (Tokyo), Hiroshi Shuto (Tokyo), Kenta Morisawa (Tokyo) and Shohei Yabu (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A hot-rolled steel sheet includes, as a chemical composition, by mass %: C: 0.030% to 0.250%; Si: 0.05% to 2.50%; Mn: 1.00% to 4.00%; Sol. Al: 0.001% to 2.000%; P: 0.100% or less; S: 0.0200% or less; N: 0.01000% or less; Ti: 0% to 0.20%; Nb: 0% to 0.20; B: 0% to 0.010%; V: 0% to 1.0%; Cr: 0% to 1.0%; Mo: 0% to 1.0%; Cu: 0% to 1.0%; Co: 0% to 1.0%; W: 0% to 1.0%; Ni: 0% to 1.0%; Ca: 0% to 0.01%; Mg: 0% to 0...