US Patent Issued to JFE STEEL on June 23 for "Converter steelmaking method" (Japanese Inventors)

ALEXANDRIA, Va., July 15 -- United States Patent no. 12,662,712, issued on June 23, was assigned to JFE STEEL Corp. (Tokyo).

"Converter steelmaking method" was invented by Rei Yokomori (Tokyo), Futoshi Ogasawara (Tokyo), Ryo Kawabata (Tokyo), Naoki Kikuchi (Tokyo) and Yudai Hattori (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A converter steelmaking method has molten pig iron subjected to dephosphorization process for dephosphorized molten iron, dephosphorized molten iron is subjected to decarburization process for molten steel. For dephosphorization process, a first cold iron source in amount meeting Formula (1) is charged into first converter-type vessel, then undephosphorized molten pig iron is c...