Patents by Inventor Fred R. Wiggins

Fred R. Wiggins 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).

  • Activation of water-in-oil emulsions of friction reducing polymers for use in saline fluids
    Patent number: 5067508
    Abstract: Friction loss in a saline liquid flowing through a conduit is reduced by combining fresh water and a water-in-oil emulsion of a water soluble friction reducing polymer, subjecting the combined material to mixing to invert the emulsion and introducing the inverted emulsion directly into the flowing saline liquid. In one aspect the water-in-oil emulsion is combined with saline water containing a surfactant to effect inversion prior to introduction of the combination into the flowing saline liquid.
    Type: Grant
    Filed: November 16, 1990
    Date of Patent: November 26, 1991
    Assignee: Conoco Inc.
    Inventors: Yung N. Lee, Fred R. Wiggins