US Patent Issued to NIPPON STEEL on Sept. 29 for "Steel sheet for hot stamping" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,747,484, issued on Sept. 29, was assigned to NIPPON STEEL Corp. (Tokyo).

"Steel sheet for hot stamping" was invented by Yuji Sakiyama (Tokyo), Akinobu Kobayashi (Tokyo) and Takayuki Harano (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "This steel sheet for hot stamping includes a base material, an Al-Si alloy plating layer in which the Al content is 75 mass % or more, the Si content is 3 mass % or more and the total of the Al content and the Si content is 95 mass % or more, an Al oxide coating having a thickness of 0 to 20 nm and a Ni plating layer in which the Ni content is more than 90 mass % in this order, the base material has a predetermine...