Patents by Inventor Roy M. Knapp

Roy M. Knapp 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).

  • Patent number: 4558739
    Abstract: Subterranean paths of water flow are impeded or changed by the facilitation of microbial growth therein. Either indigenous bacterial growth may be stimulated with nutrients or the formation may be first seeded with bacteria or their spores which inhibit fluid flow after proliferation. These methods and bacteria are usable to alter the flow of water in a waterflooded oil formation and to impede the outflow of contaminated water.
    Type: Grant
    Filed: April 5, 1983
    Date of Patent: December 17, 1985
    Assignee: The Board of Regents for the University of Oklahoma
    Inventors: Michael J. McInerney, Gary E. Jenneman, Roy M. Knapp, Donald E. Menzie
  • Patent number: 4522261
    Abstract: A pure culture of Bacillus licheniformis strain JF-2 (ATCC No. 39307) and a process for using said culture and the surfactant lichenysin produced thereby for the enhancement of oil recovery from subterranean formations. Lichenysin is an effective surfactant over a wide range of temperatures, pH's, salt and calcium concentrations.
    Type: Grant
    Filed: April 5, 1983
    Date of Patent: June 11, 1985
    Assignee: The Board of Regents for the University of Oklahoma
    Inventors: Michael J. McInerney, Gary E. Jenneman, Roy M. Knapp, Donald E. Menzie