US Patent Issued to JFE Steel on March 3 for "Steel sheet, member, and methods for manufacturing the same" (Japanese Inventors)

ALEXANDRIA, Va., March 3 -- United States Patent no. 12,565,691, issued on March 3, was assigned to JFE Steel Corp. (Tokyo).

"Steel sheet, member, and methods for manufacturing the same" was invented by Yusuke Wada (Tokyo), Tatsuya Nakagaito (Tokyo), Shotaro Terashima (Tokyo), Lingling Yang (Tokyo) and Takeshi Yokota (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A steel sheet according to the present invention has a specific chemical composition and a steel microstructure including, in terms of area fraction, ferrite: 20% or more and 60% or less, a total of bainite and tempered martensite: 25% or more and 60% or less, retained austenite: 7% or more and 20% or less, fresh martensite: 8% or more and 40...