Patents by Inventor Thomas R. Jack

Thomas R. Jack 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).

  • Method of enhancing oil recovery by use of exopolymer-producing micro-organisms
    Patent number: 4561500
    Abstract: A method of controlling and selectively reducing the permeability of zones in an oil-bearing underground formation which have higher permeabilities than the surrounding zones by injection of exopolymer producing microorganisms into the oil-bearing formation is described. The exopolymer production of the microorganisms used in the method is controlled by regulation of the availability to the microorganisms of a compound such as sucrose which triggers exopolymer production.
    Type: Grant
    Filed: December 16, 1983
    Date of Patent: December 31, 1985
    Assignee: Nova/Husky Research Corporation Ltd.
    Inventors: Bradley G. Thompson, Thomas R. Jack
  • Method of enhancing oil recovery by use of exopolymer producing microorganisms
    Patent number: 4460043
    Abstract: A method of controlling and selectively reducing the permeability of zones in an oil-bearing underground formation which have higher permeabilities than the surrounding zones by injection of exopolymer producing microorganisms into the oil-bearing formation is described. The exopolymer production of the microorganisms used in the method is controlled by regulation of the availability to the microorganisms of a compound such as sucrose which triggers exopolymer production.
    Type: Grant
    Filed: August 5, 1982
    Date of Patent: July 17, 1984
    Assignee: NOVA/Husky Research Corporation Ltd.
    Inventors: Bradley G. Thompson, Thomas R. Jack