ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,735,761, issued on Sept. 15, was assigned to POSCO Co. LTD (Pohang-si, South Korea).

"Pressure vessel steel having excellent hydrogen induced cracking resistance, and manufacturing method therefor" was invented by Dae-Woo Kim (Pohang-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to pressure vessel steel having excellent hydrogen-induced cracking resistance, and a manufacturing method therefor. One embodiment of the present invention provides a pressure vessel steel having excellent hydrogen-induced cracking resistance, and a manufacturing method therefor, the steel comprising, by wt %, 0.2-0.3% of carbon (...