US Patent Issued to POSCO on Nov. 25 for "Zinc-based coated steel material having excellent corrosion resistance and spot weldability" (South Korean Inventors)

ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,479,192, issued on Nov. 25, was assigned to POSCO Co. LTD (Pohang-si, South Korea).

"Zinc-based coated steel material having excellent corrosion resistance and spot weldability" was invented by Young-Jin Kwak (Gwangyang-si, South Korea) and Woo-Sung Jung (Gwangyang-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "A zinc-based coated steel material includes: a base steel; and a multilayer zinc-based plating layer composed of two or more discriminated plating layers, wherein the multilayer zinc-based plating layer includes Mg at a ratio of 0.12 to 0.64 percent by weight to the entire multi-plating layer, and the multilayer zinc-based plating...