ALEXANDRIA, Va., June 9 -- United States Patent no. 12,649,966, issued on June 9, was assigned to POSCO Co. LTD (Pohang-si, South Korea).
"Steel material having low surface hardness and excellent low temperature impact toughness, and method for manufacturing 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: "The present invention is to provide a steel material having low surface hardness and excellent low temperature impact toughness, and a method for manufacturing same."
The patent was filed on Nov. 17, 2021, under Application No. 18/038,096.
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