US Patent Issued to JFE Steel on June 23 for "Method for producing grain-oriented electrical steel sheet" (Japanese Inventors)

ALEXANDRIA, Va., July 15 -- United States Patent no. 12,662,724, issued on June 23, was assigned to JFE Steel Corp. (Tokyo).

"Method for producing grain-oriented electrical steel sheet" was invented by Masanori Takenaka (Tokyo), Takeshi Imamura (Tokyo), Takaaki Tanaka (Tokyo) and Hiroi Yamaguchi (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "In the production of a grain-oriented electrical steel sheet by heating a steel slab containing, in mass %, C: 0.02 to 0.10%, Si: 2.5 to 5.5%, Mn: 0.01 to 0.30%, S: 0.0010 to 0.040%, Se: 0 to 0.040%, sol. Al: 0.010 to 0.040%; and N: 0.004 to 0.020% to 1300deg C. or higher; subsequently performing hot rolling, hot-band annealing as necessary, cold rolling, and prim...