US Patent Issued to POSCO on Jan. 13 for "Steel sheet with improved yellowing resistance and phosphatability and manufacturing method thereof" (South Korean Inventors)

ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,522,937, issued on Jan. 13, was assigned to POSCO (Pohang-si, South Korea).

"Steel sheet with improved yellowing resistance and phosphatability and manufacturing method thereof" was invented by Rho-Bum Park (Gwangyang-si, South Korea) and Jong-Ho Kim (Gwangyang-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a steel sheet with improved yellowing resistance and phosphatability, wherein the steel sheet contains 0.5% by weight or more of Mn, and contains 0.01 to 10 mg/m2 of Ca+Mg, 0.01 to 10 mg/m2 of P, 0.01 to 20 mg/m2 of C, and 0.05 to 30 mg/m2 of O as components excluding a steel component on the surface o...