Patents by Inventor Ripple David E.

Ripple David E. 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).

  • Process for preparing molybdenum-containing compositions useful for improved fuel economy of internal combustion engines
    Patent number: 4456538
    Abstract: Molybdenum-containing compositions prepared by reacting:(a) a phosphorus-containing acid represented by the formula: ##STR1## wherein each X and X' is independently oxygen or sulfur, each n is zero or one and each R is independently the same or a different hydrocarbon-based radical; and(b) at least one hexavalent molybdenum oxide compound, and(c) hydrogen sulfide,in the presence of(d) a polar solvent are useful as additives for lubricants. Internal combustion engines, especially gasoline engines, when lubricated by said additive-containing lubricants exhibit improved fuel economy.
    Type: Grant
    Filed: November 20, 1981
    Date of Patent: June 26, 1984
    Assignee: The Lubrizol Corporation
    Inventor: Ripple David E.