Patents by Inventor Helen F. Otto, executrix

Helen F. Otto, executrix 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).

  • Metal complexes of alkylsuccinic compounds as lubricant and fuel additives
    Patent number: 4292186
    Abstract: Fluid compositions containing a lubricant or liquid hydrocarbon fuel and a minor amount of a complex salt containing a 5- or 6-member ring are provided. These derivatives are made by complexing (1) the reaction product of an alcohol or an aminoalcohol with a succinic compound containing a long-chain hydrocarbon with (2) a metal salt. One such complex is one made by reacting a metal salt with the product of reaction between an alkylsuccinic acid or anhydride and said alcohol or aminoalcohol.
    Type: Grant
    Filed: July 3, 1980
    Date of Patent: September 29, 1981
    Assignee: Mobil Oil Corporation
    Inventors: Sheldon Chibnik, Ferdinand P. Otto, deceased, Helen F. Otto, executrix