ALEXANDRIA, Va., March 24 -- United States Patent no. 12,584,187, issued on March 24, was assigned to JFE Steel Corp. (Tokyo).

"Method for removing phosphorus from phosphorus-containing substance, method for manufacturing raw material for metal smelting or raw material for metal refining, and method for manufacturing metal" was invented by Rei Yamada (Tokyo), Kenji Nakase (Tokyo), Yoshie Nakai (Tokyo) and Naoki Kikuchi (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method removes phosphorus from a phosphorus-containing substance. In the method, the phosphorus-containing substance that is used as a raw material for metal smelting or refining is reacted with a nitrogen-containing gas so that phosphoru...