Patents Represented by Attorney Frank T. Johman

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  • Additive combinations and fuels containing them
    Patent number: 4261703
    Abstract: Three component additive combinations for improving the flow of distillate fuel oils comprise(A) a conventional distillate fuel flow improver(B) a lube oil pour depressant and(C) a polar compound other than certain specified nitrogen compounds which acts as an anti-agglomerant for wax particles in the fuel oil.
    Type: Grant
    Filed: May 23, 1979
    Date of Patent: April 14, 1981
    Assignee: Exxon Research & Engineering Co.
    Inventors: Robert D. Tack, Kenneth Lewtas