US Patent Issued to JFE Steel on May 19 for "Decarburization refining method for molten steel under reduced pressure" (Japanese Inventors)

ALEXANDRIA, Va., May 19 -- United States Patent no. 12,630,893, issued on May 19, was assigned to JFE Steel Corp. (Tokyo).

"Decarburization refining method for molten steel under reduced pressure" was invented by Keisuke Mizobata (Tokyo), Akifumi Harada (Tokyo), Yoshie Nakai (Tokyo) and Rei Yamada (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A decarburization refining method for molten steel under reduced pressure. The method includes an oxygen-blowing decarburization and a rimmed decarburization. Using operation data taken at a time when oxygen-blowing decarburization is started and a time when oxygen-blowing decarburization is ended, an amount of carbon removed while the oxygen-blowing decarburiza...