US Patent Issued to POSCO on April 7 for "QT heat treated high carbon hot rolled steel sheet, high carbon cold rolled steel sheet, QT heat treated high carbon cold rolled steel sheet, and manufacturing methods thereof" (South Korean Inventors)

ALEXANDRIA, Va., April 7 -- United States Patent no. 12,595,539, issued on April 7, was assigned to POSCO Co. LTD (Pohang-si, South Korea).

"QT heat treated high carbon hot rolled steel sheet, high carbon cold rolled steel sheet, QT heat treated high carbon cold rolled steel sheet, and manufacturing methods thereof" was invented by Sun-Mi Kim (Pohang-si, South Korea), Jae-Hun Choi (Pohang-si, South Korea) and Hak-Jun Kim (Pohang-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are a QT heat treated high carbon hot rolled steel sheet, a high carbon cold rolled steel sheet, a QT heat treated high carbon cold rolled steel sheet, and manufacturing methods thereof, wherein the QT heat treat...