ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,383,990, issued on Aug. 12, was assigned to Kobe Steel Ltd. (Kobe, Japan).
"Flux-cored wire" was invented by Peng Han (Fujisawa, Japan) and Masamichi Suzuki (Fujisawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A flux-cored wire for arc welding, including a steel sheath filled with flux, where the wire contains, relative to a total mass of the wire, Cr: 16.0 to 22.0 mass %, Ni: 6.0 to 11.0 mass %, Mn: 0.7 to 2.6 mass %, Si: 0.1 to 1.1 mass %, Zr: 0.2 to 0.8 mass %, Fe: 45.0 to 65.0 mass %, TiO2: 5.0 to 9.0 mass %, SiO2: 0.1 to 2.0 mass %, ZrO2: 0.5 to 3.0 mass %, and Bi: less than 0.0020 mass %. Where by mass %, a Si content is denoted by [Si]...