ALEXANDRIA, Va., July 16 -- United States Patent no. 12,668,888, issued on June 30, was assigned to BASF SE (Ludwigshafen Am Rhein, Germany).
"Composition for tin or tin alloy electroplating comprising a pyrazole-type antioxidant" was invented by Sabine Frischhut (Ludwigshafen, Germany), Jan Niclas Gorges (Ludwigshafen, Germany), Soichi Watanabe (Ludwigshafen, Germany) and Marco Arnold (Ludwigshafen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed herein is an aqueous composition including tin ions, optionally alloy metal ions, and at least one antioxidant of formula X1a or of formula L1b or of formula L1c or of formula L1d or of formula L1e or the tautomeric forms of formulas X1b, X1c, X1d,...