Patents by Inventor Terence F. Finch

Terence F. Finch has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Use of vinyl addition copolymers to improve quality of lubricating oil additives
    Patent number: 4584111
    Abstract: Processes for the manufacture of substantially haze free lubricating oil additives such as the zinc salts of dihydrocarbyldithiophosphoric acid and calcium phenate comprising the addition of an effective amount of an acrylamide polymer as a water-in-oil emulsion after the neutralization of an oil solution of the oil soluble moiety of said additive such as the neutralization of a dihydrocarbyldithiophosphoric acid by zinc oxide whereby the resulting colloidal by-products, untreated raw materials and suspended impurities are more susceptible to subsequent separation processes, such as centrifugation and filtration.
    Type: Grant
    Filed: December 28, 1984
    Date of Patent: April 22, 1986
    Assignee: Exxon Research & Engineering Co.
    Inventors: Terry L. Collett, Gerald Shaw, Terence F. Finch