Patents Represented by Attorney Dorsey & Whitney1 LLP

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  • System and apparatus for purging absorptive materials used in the removal of contaminates from an aqueous medium
    Patent number: 7520987
    Abstract: Methods, systems and apparatus are provided for purging an adsorptive material of entrapped particulates. Methods, systems and apparatus rely upon a reverse loop for reversing the flow of medium within an adsorption material, allowing particulates caught within the adsorption material to be preferentially moved through and out of the adsorption material.
    Type: Grant
    Filed: November 15, 2006
    Date of Patent: April 21, 2009
    Assignee: WRT International LLC
    Inventors: Charles S. Williams, Scott E. Heffner