US Patent Issued to NIPPON STEEL on Oct. 21 for "Hot-rolled steel sheet and method for manufacturing same" (Japanese Inventors)

ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,448,660, issued on Oct. 21, was assigned to NIPPON STEEL Corp. (Tokyo).

"Hot-rolled steel sheet and method for manufacturing same" was invented by Jun Ando (Tokyo), Teruki Hayashida (Tokyo), Tatsuo Yokoi (Tokyo) and Akifumi Sakakibara (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A hot-rolled steel sheet has, as a chemical composition, by mass %: C: 0.01% to 0.30%; Si: 0.01% to 3.00%; Mn: 0.20% to 3.00%; P: 0.030% or less; S: 0.030% or less; Al: 0.001% to 2.000%; N: 0.0100% or less; and Ni: 0.02% to 0.50%, in which among measurement points at which elemental analysis is performed at a measurement pitch of 1 micro metre using an EPMA in a region ...