Patents by Inventor Edward J. Friihauf

Edward J. Friihauf 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).

  • Demulsifier additive compositions for lubricants and fuels and concentrates containing the same
    Patent number: 4129508
    Abstract: Lubricant and fuel compositions characterized by improved demulsifying properties are disclosed, which properties are contributed substantially by an additive comprising a mixture of:(A) One or more reaction products of a hydrocarbon-substituted succinic acid or anhydride with one or more polyalkylene glycols or monoethers thereof,(B) One or more organic basic metal salts, and(C) one or more alkoxylated amines.
    Type: Grant
    Filed: April 24, 1978
    Date of Patent: December 12, 1978
    Assignee: The Lubrizol Corporation
    Inventor: Edward J. Friihauf