US Patent Issued to POSCO on July 14 for "Steel sheet with excellent surface quality, and manufacturing method therefor" (South Korean Inventor)

ALEXANDRIA, Va., July 14 -- United States Patent no. 12,680,142, issued on July 14, was assigned to POSCO (Pohang-si, South Korea).

"Steel sheet with excellent surface quality, and manufacturing method therefor" was invented by Kyong-Su Park (Pohang-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "A steel sheet with excellent surface quality, and a manufacturing method therefor are provided. The present invention provides a pickled steel sheet with excellent surface quality, comprising, by wt %, carbon (C) in an amount greater than or equal to 0.05% and less than 0.4%, 0.5% or less of silicon (Si) (excluding 0%), 0.05% or less of phosphorus (P), 0.03% or less of sulfur (S), 0.01% or less of bor...