Original oil and gas trade magazine vintage ad for PATENT CHEMICALS, INC. of Cincinnati, Ohio. Manufacturing Division was located at 335 McLean Blvd, Paterson, NJ. Colors in fluid form dye concentrates. For cleaner, easier coloring of petroleum products, eliminates pre-dissolving, dusting, operator exposure. For use in gasolines, diesel fuels, fuel and lubricating oils, automatic transmission fluids, break-in greases. This unique 1959 old petroleum refining and processing additive trade magazine advertisement would display beautifully matted and framed.