US Patent Issued to POSCO on July 28 for "Steel plate for pressure vessel with excellent cryogenic toughness, and method of manufacturing same" (South Korean Inventor)

ALEXANDRIA, Va., July 28 -- United States Patent no. 12,692,573, issued on July 28, was assigned to POSCO Co. LTD (Pohang-si, South Korea).

"Steel plate for pressure vessel with excellent cryogenic toughness, and method of manufacturing same" was invented by Soon-Taik Hong (Gyeongsangbuk-do, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a method of manufacturing a cryogenic steel plate for a pressure vessel and a cryogenic steel plate for a pressure vessel manufactured thereby, the method comprising the steps of: reheating a slab containing, in weight %, C: 0.05-0.15%, Si: 0.20-0.35%, Mn: 0.5-1.5%, P: 0.012% or less, S: 0.015% or less, Al: 0.02-0.10%, Ni: 6.01-6....