US Patent Issued to POSCO on Feb. 17 for "High strength steel plate having excellent low temperature impact toughness. and method for manufacturing the same" (South Korean Inventors)

ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,553,114, issued on Feb. 17, was assigned to POSCO (Pohang-si, South Korea).

"High strength steel plate having excellent low temperature impact toughness. and method for manufacturing the same" was invented by Tae-Il So (Gwangyang-si, South Korea) and Sang-Deok Kang (Gwangyang-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are high-strength steel plate having excellent low-temperature impact toughness and method of manufacturing the same. The present disclosure relates to a high-strength steel plate comprising, by weight %, carbon (C): 0.04-0.12%, silicon (Si): 0.1-0.5%, manganese (Mn): 1.2-2.5%, phosphorus (P): 0.01% or less, su...