US Patent Issued to JFE Steel on May 19 for "High-strength steel sheet and method for producing same" (Japanese Inventors)

ALEXANDRIA, Va., May 19 -- United States Patent no. 12,630,895, issued on May 19, was assigned to JFE Steel Corp. (Tokyo).

"High-strength steel sheet and method for producing same" was invented by Yoshihiko Ono (Tokyo), Yuma Honda (Tokyo), Shimpei Yoshioka (Tokyo), Koichi Taniguchi (Tokyo), Nobuyuki Nakamura (Tokyo) and Takeshi Murai (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A high-strength steel sheet of the present invention has a specific chemical composition. Furthermore, in the steel sheet, a degree of Mn segregation in a specific region is 1.5 or less; a maximum P concentration in a specific region is 0.08 mass % or less; in a specific region, the number of specific MnS particle groups is 2...