ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,546,760, issued on Feb. 10, was assigned to Phillips 66 Co. (Houston).
"Quantitating corrosive naphthenic acids in crude oil" was invented by Leonard Nyadong (Owasso, Okla.) and Edward C. Weintrob (Edmond, Okla.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Processes for quantitating the corrosivity of naphthenic acids in a sample comprising crude oil or a liquid fraction thereof by reacting the sample with a metal comprising iron to produce iron naphthenates that are then stabilized by a ligand. The stabilized iron naphthenates are then analyzed by mass spectrometry to accurately quantitate the percentage of total naphthenic acids in the sample that a...