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. 12,565,690, 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), Takeshi Yokota (Tokyo), Shunsuke Yamamoto (Tokyo) and Yuki Takeda (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A steel sheet has a specific chemical composition and a steel microstructure including, in terms of area fraction, ferrite: 60% or more and 85% or less, bainite: 3% or more and 15% or less, retained austenite: 3% or more and 15% or less, fresh martensite: 3% or more and 15% or less, and the rema...