US Patent Issued to JFE Steel on April 29 for "High-carbon hot-rolled steel sheet and method for manufacturing the same" (Japanese Inventors)

ALEXANDRIA, Va., June 9 -- United States Patent no. 12,286,681, issued on April 29, was assigned to JFE Steel Corp. (Tokyo).

"High-carbon hot-rolled steel sheet and method for manufacturing the same" was invented by Yuka Miyamoto (Tokyo), Yasuhiro Sakurai (Tokyo) and Yoshihiko Ono (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A high-carbon hot-rolled steel sheet and a method for manufacturing the steel sheet are provided. The high-carbon hot-rolled steel sheet has a particular chemical composition. The microstructure of the steel sheet includes ferrite, cementite, and pearlite that accounts for 6.5% or less of the entire microstructure by area fraction. The proportion of the number of cementite grain...