US Patent Issued to POSCO on Oct. 21 for "Composite plated steel sheet having excellent post-formation corrosion resistance, and manufacturing method therefor" (South Korean Inventor)

ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,448,674, issued on Oct. 21, was assigned to POSCO Co. LTD (Pohang-si, South Korea).

"Composite plated steel sheet having excellent post-formation corrosion resistance, and manufacturing method therefor" was invented by Il-Ryoung Sohn (Gwangyang-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "A composite plated steel sheet including a base steel sheet; a Zn-Mg-Al-based plating layer provided on at least one surface of the base steel sheet; and a resin layer provided on at least one surface of the Zn-Mg-Al-based plating layer. The resin layer includes a base resin and resin powder. A hardness of the resin powder is 1.1 to 2 times that of th...