US Patent Issued to POSCO on Jan. 13 for "Bilayer composition for surface treatment of steel plate and surface-treated steel plate using same" (South Korean Inventors)

ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,521,757, issued on Jan. 13, was assigned to POSCO Co. LTD (Pohang-si, South Korea).

"Bilayer composition for surface treatment of steel plate and surface-treated steel plate using same" was invented by Chang-Hoon Choi (Pohang-si, South Korea), Won-Ho Son (Pohang-si, South Korea) and Hee-Jea Eun (Pohang-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a bilayer composition for surface treatment of a steel plate and a surface-treated steel plate using same. The bilayer composition for surface treatment of a steel plate, comprising an undercoat coating composition including 1 to 12 wt % of a phenoxy resin, 0.001 to 1.0 wt % of col...