ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,509,752, issued on Dec. 30, was assigned to JFE Steel Corp. (Tokyo).
"Dual-phase stainless steel and dual-phase stainless steel seamless pipe" was invented by Kazuki Fujimura (Tokyo), Shunsuke Sasaki (Tokyo) and Masao Yuga (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A dual-phase stainless steel or dual-phase stainless steel seamless pipe has a certain composition, the dual-phase stainless steel or dual-phase stainless steel seamless pipe having a microstructure containing 20 to 70% austenitic phase and 30 to 80% ferritic phase by volume, the dual-phase stainless steel or dual-phase stainless steel seamless pipe having a yield strength, YS, of ...