Patents by Inventor Jack E. Coovert

Jack E. Coovert 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).

  • Lubricant compositions comprising a phosphate additive system
    Patent number: 4514312
    Abstract: A lubricant composition having special utility as a lubricant in constant velocity universal joints of the type used in front wheel drive vehicles. The composition comprises a low sulfur lubricating oil base grease and an additive package comprising a mixture of an oil soluble, sulfur-free organic compound and an oil insoluble sulfur-free inorganic compound.
    Type: Grant
    Filed: April 12, 1984
    Date of Patent: April 30, 1985
    Assignee: Witco Chemical Corporation
    Inventors: Jon C. Root, John F. Barnes, Jack E. Coovert