US Patent Issued to JFE STEEL on Dec. 30 for "Decarburization end point determination method, decarburization end point determination device, secondary refining operation method for steel making, and method for producing molten steel" (Japanese Inventors)

ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,509,739, issued on Dec. 30, was assigned to JFE STEEL Corp. (Tokyo).

"Decarburization end point determination method, decarburization end point determination device, secondary refining operation method for steel making, and method for producing molten steel" was invented by Shuji Kuyama (Tokyo), Tomoyoshi Ogasahara (Tokyo), Yoshie Nakai (Tokyo), Keisuke Mizobata (Tokyo), Tomoharu Ishida (Tokyo) and Masamichi Kikuchi (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A decarburization end point determination method includes: estimating the carbon concentration and oxygen concentration of the molten steel and carbon dioxide gas concentration of exhaust...