ALEXANDRIA, Va., June 16 -- United States Patent no. 12,305,250, issued on May 20, was assigned to POSCO (Pohang-si, South Korea).

"Steel plate for pressure vessel with excellent cryogenic lateral expansion and manufacturing method therefor" was invented by Soon-Taik Hong (Pohang-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a steel plate for a pressure vessel with excellent cryogenic lateral expansion and a manufacturing method therefor.The steel plate for a pressure vessel according to the present invention comprises, by wt %, 0.05 to 0.15% of C, 0.20 to 0.40% of Si, 0.3 to 0.6% of Mn, 0.015% or less of P, 0.015% or less of S, 0.02 to 0.10% of Al, 4.5 to 5.5% of Ni, 0.2 to 0.4%...