ALEXANDRIA, Va., June 16 -- United States Patent no. 12,305,255, issued on May 20, was assigned to JFE STEEL Corp. (Tokyo).
"Method for producing grain-oriented electrical steel sheet" was invented by Yuiko Ehashi (Tokyo), Masanori Takenaka (Tokyo), Hirokazu Sugihara (Tokyo) and Soshi Yoshimoto (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A grain oriented electrical steel sheet is produced by heating a steel slab containing, by mass %, C:0.02-0.10%, Si:2.0-5.0%, Mn:0.01-1.00%, sol. Al:0.01-0.04%, N:0.004-0.020% and S+Se:0.002-0.040% to a temperature of higher than 1280deg C., and subjecting the sheet to a hot rolling, a hot-band annealing, a single cold rolling or two or more cold rollings having an...