ALEXANDRIA, Va., April 7 -- United States Patent no. 12,597,542, issued on April 7, was assigned to JFR STEEL Corp. (Tokyo).
"Soft magnetic iron" was invented by Katsuyuki Ichimiya (Tokyo), Koichi Nakashima (Tokyo) and Yuta Imanami (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a technique that can achieve both magnetic properties and machinability by cutting at a high level, which has been impossible with only the conventional techniques of improving the machinability by cutting using MnS or the like. A soft magnetic iron comprises a chemical composition containing, in mass %, C: less than 0.02%, Si: less than 0.05%, Mn: more than 0.03% and 0.50% or less, P: 0.002% or more and less than 0...