Patents by Inventor Rhonda L. Graham

Rhonda L. Graham 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).

  • Rapid gel formation in hydrocarbon recovery
    Patent number: 6054417
    Abstract: Method and composition for gel formation in hydrocarbon recovery, in which an organic phosphate ester is gelled by a novel activator composition comprising iron sulfate, dibutylaminoethanol, and a phosphate surfactant.
    Type: Grant
    Filed: October 4, 1999
    Date of Patent: April 25, 2000
    Assignee: Clearwater, Inc.
    Inventors: Rhonda L. Graham, Leonard J. Persinski
  • Rapid gel formation in hydrocarbon recovery
    Patent number: 6004908
    Abstract: Method and composition for gel formation in hydrocarbon recovery, in which an organic phosphate ester is gelled by a novel activator composition comprising iron sulfate, dibutylaminoethanol, and a phosphate surfactant.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: December 21, 1999
    Assignee: Clearwater, Inc.
    Inventors: Rhonda L. Graham, Leonard J. Persinski