ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,384,968, issued on Aug. 12, was assigned to DORF KETAL CHEMICALS FZE (Fujairah, United Arab Emirates).
"Inhibited hydrofluoric acid composition" was invented by Clay Purdy (Medicine Hat, Canada), Markus Weissenberger (Calgary, Canada), Karl W. Dawson (Calgary, Canada) and Kyle G. Wynnyk (Calgary, Canada).
According to the abstract* released by the U.S. Patent & Trademark Office: "An inhibited hydrofluoric acid aqueous composition, said composition comprising: hydrofluoric acid in solution; and a weak base selected from the group consisting of: lysine, arginine, histidine, glutamine, asparagine, tryptophan, and tyrosine; wherein said weak base and hydrofluoric acid are present in a mo...