Patents by Inventor Mark A. Matheson

Mark A. Matheson 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).

  • Process and apparatus for biologically treating water
    Patent number: 6146531
    Abstract: A process and apparatus for biologically treating water. The inventive process preferably comprises the steps of: (a) adding a sulfur-containing oxygen scavenger to the water in an amount effective for at least reducing the amount of dissolved free oxygen contained in the water; (b) removing at least a portion of a substance from the water by exposing the water to microorganisms effective for biologically removing the substance therefrom; and (c) feeding a biostimulant to the microorganisms effective for increasing the rate at which step (b) occurs. The inventive apparatus preferably comprises a system for adding the sulfur-containing oxygen scavenger to the source water stream and a system for feeding the biostimulant to the microorganisms.
    Type: Grant
    Filed: February 3, 1999
    Date of Patent: November 14, 2000
    Assignee: Oklahoma Rural Water Association
    Inventor: Mark A. Matheson
  • Process for biologically treating water
    Patent number: 5954963
    Abstract: A process and apparatus for biologically treating water. The inventive process preferably comprises the steps of: (a) adding a sulfur-containing oxygen scavenger to the water in an amount effective for at least reducing the amount of dissolved free oxygen contained in the water; (b) removing at least a portion of a substance from the water by exposing the water to microorganisms effective for biologically removing the substance therefrom; and (c) feeding a biostimulant to the microorganisms effective for increasing the rate at which step (b) occurs. The inventive apparatus preferably comprises a system for adding the sulfur-containing oxygen scavenger to the source water stream and a system for feeding the biostimulant to the microorganisms.
    Type: Grant
    Filed: January 25, 1996
    Date of Patent: September 21, 1999
    Assignee: Oklahoma Rural Water Association
    Inventor: Mark A. Matheson