Patents by Inventor D. Philip Cords

D. Philip Cords 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).

  • Emulsion breaking using alkylphenol-polyethylene oxide-acrylate polymer coated coalescer material
    Patent number: 5156767
    Abstract: A method of emulsion breaking comprising contacting an emulsion with a substrate having adhered thereto an alkylphenol-polyethylene oxide-acrylate polymer. The emulsion breaking material is used to separate water-in-oil emulsion by coalescence.
    Type: Grant
    Filed: February 26, 1992
    Date of Patent: October 20, 1992
    Assignee: Conoco Inc.
    Inventors: Patrick H. Fitzgerald, Nicholas O. Wolf, Charles R. Clark, D. Philip Cords
  • Placement process for oil field chemicals
    Patent number: 4986353
    Abstract: Oil field chemicals are incorporated in polymeric particles of the condensation product of hydroxyacetic acid or the co-condensation product of hydroxyacetic acid and other compounds containing hydroxy-, carboxylic acid-, or hydroxycarboxylic acid moieties. The particles are introduced into an oil well bore and/or subterranean oil formation where the polymeric particles dissolve over a period of time and release the oil field chemicals.
    Type: Grant
    Filed: September 14, 1988
    Date of Patent: January 22, 1991
    Assignees: Conoco Inc., E. I. DuPont de Nemours and Company
    Inventors: Charles R. Clark, Donald L. Whitfill, D. Philip Cords, Edward F. McBride, Harold E. Bellis
  • Process for the preparation of fluid loss additive and gel breaker
    Patent number: 4986355
    Abstract: A melted polymer of hydroxyacetic acid with itself or with other hydroxy-, carboxylic acid-, or hydroxycarboxylic acid-containing moieties is subjected to high shear and injected into an organic liquid which is inert to the polymer to form an organic liquid dispersion of very fine polymer particles. In one aspect the melted polymer is combined with the organic liquid and the combination is thereafter subjected to high shear to form the fine particle polymer dispersion. A dispersion agent may also be used to aid in dispersing the particles. The dispersion is used for fluid loss control and gel breaking in subterranean formations.
    Type: Grant
    Filed: May 18, 1989
    Date of Patent: January 22, 1991
    Assignee: Conoco Inc.
    Inventors: Burton M. Casad, Charles R. Clark, Lisa A. Cantu, D. Philip Cords, Edward F. McBride