ALEXANDRIA, Va., June 16 -- United States Patent no. 12,655,488, issued on June 16, was assigned to JFE STEEL Corp. (Tokyo).
"Method for producing chromium-containing molten steel" was invented by Nobuhiko Oda (Tokyo), Futoshi Ogasawara (Tokyo), Kentaro Kakigi (Tokyo) and Takayoshi Fukuyama (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for producing chromium-containing molten steel from a raw material including a chromium-containing raw material includes a first step in which a slag basicity before rough decarburization by oxygen blowing is adjusted to be not less than 1.5 and not more than 3.0, a slag basicity after rough decarburization by oxygen blowing is adjusted to be not less than 2.0...