ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,729,421, issued on Sept. 8, was assigned to NIPPON STEEL Corp. (Tokyo).
"Austenitic stainless steel weld joint" was invented by Kana Jotoku (Tokyo), Kenta Yamada (Tokyo), Hirokazu Okada (Tokyo) and Takahiro Osuki (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is an austenitic stainless steel weld joint that is excellent in polythionic acid SCC resistance and naphthenic acid corrosion resistance, and is also excellent in creep ductility. An austenitic stainless steel weld joint includes a base material and a weld metal. The weld metal has a chemical composition at its width-center position and at its thickness-center position consisting o...