ALEXANDRIA, Va., April 15 -- United States Patent no. 12,601,039, issued on April 14, was assigned to NIPPON STEEL STAINLESS STEEL Corp. (Tokyo).
"Ferritic stainless steel and method for producing same" was invented by Kohichi Tsuboi (Tokyo), Kazunari Imakawa (Tokyo) and Shinichi Teraoka (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention has an object to provide a ferritic stainless steel having a broad range of suitable quenching temperature and a high hardness and excellent corrosion resistance after quenching and beautiful and useful as a material for martensitic stainless steel products and provide an industrially stable method for production. The ferritic stainless steel of the ...