Patents by Inventor Wilmer C. Eisenhard

Wilmer C. Eisenhard 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).

  • Water-soluble polyesters
    Patent number: 4317740
    Abstract: Water-soluble polyesters formed by the condensation of polyoxyalkylene glycol with the addition product of a dimer fatty acid and maleic anhydride are found to be particularly useful as lubricants and as viscosity adjusting additives in aqueous hydraulic systems.
    Type: Grant
    Filed: April 22, 1980
    Date of Patent: March 2, 1982
    Assignee: Union Camp Corporation
    Inventor: Wilmer C. Eisenhard