Patents by Inventor Michael L. Duke

Michael L. Duke 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).

  • Wastewater treatment system and method
    Patent number: 6730225
    Abstract: A system and method for treating wastewater including: delivering untreated wastewater into a permeable container disposed in an impoundment. A wastewater input moves untreated wastewater to the interior of the permeable container. Treated wastewater is flowed through the permeable container and is removed via a wastewater output. A method of practicing wastewater treatment, comprising the steps of delivering untreated wastewater into a permeable container contained within an impoundment; treating the wastewater in the permeable container; moving treated wastewater from the interior of the permeable container to a position between the interior of the permeable container and the exterior of the impoundment; and removing the treated wastewater from the impoundment.
    Type: Grant
    Filed: September 4, 2001
    Date of Patent: May 4, 2004
    Inventors: Michael L. Duke, Jack Fowler