ALEXANDRIA, Va., July 21 -- United States Patent no. 12,686,906, issued on July 21, was assigned to POSCO Co. LTD (Pohang-si, South Korea).

"High-strength austenitic stainless steel with improved low-temperature toughness in hydrogen environment" was invented by Kwangmin Kim (Pohang-si, South Korea), Kyung-Hun Kim (Pohang-si, South Korea) and Han-Seop Noh (Ulsan, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a high-strength austenitic stainless steel with improved low-temperature toughness in a hydrogen environment. The austenitic stainless steel with improved low-temperature toughness in a hydrogen environment includes, in percent by weight (wt %), 0.1% or less of C, 1.5% or less o...