US Patent Issued to JFE Steel on April 21 for "High strength steel sheet, high strength member, and methods for manufacturing the same" (Japanese Inventors)

ALEXANDRIA, Va., April 21 -- United States Patent no. 12,606,880, issued on April 21, was assigned to JFE Steel Corp. (Tokyo).

"High strength steel sheet, high strength member, and methods for manufacturing the same" was invented by Takuya Hirashima (Tokyo), Yu Hashimoto (Tokyo), Shinjiro Kaneko (Tokyo) and Yoshihiko Ono (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "The high strength steel sheet of the present invention has a specific chemical composition, and contains, in terms of area fraction relative to an entire steel microstructure, 30% or more and 100% or less ferrite, 0% or more and 70% or less martensite, and less than 20% in total of pearlite, bainite and retained austenite, a total content...