ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,392,006, issued on Aug. 19, was assigned to JFE Steel Corp. (Tokyo).
"High-strength steel sheet and method for manufacturing the same" was invented by Thi Huyen Doan (Tokyo), Hiroshi Hasegawa (Tokyo) and Hideyuki Kimura (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "The high-strength steel sheet has a chemical composition with MSC value in the range of 2.7% to 3.8% by mass defined by a specific formula, wherein the high-strength steel sheet has a microstructure including specific microstructures in a surface layer region extending from the surface of the steel sheet to a depth of 100 micro metre and in an inner region other than the surface layer...