Patents by Inventor Ted M. Shields

Ted M. Shields 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).

  • Combined oxidation and chelating adsorption system for removal of mercury from water
    Patent number: 6521131
    Abstract: The disclosed invention relates to a method of disposing of mercury-containing wastewater containing mercury-complexing materials, comprising the steps of treating wastewater containing mercury ions with a strong oxidizing agent in a reaction chamber to produce pretreated wastewater by removing an effluent stream of pretreated wastewater from the reaction chamber; and passing the effluent stream of pretreated wastewater through a column packed with a mercury-selective adsorbent material to produce an effluent stream of wastewater having a reduced mercury content. The adsorbent material is a porous resin having immobilized mercury-selective chelating groups bound thereto. A particularly preferred adsorbent material is a crosslinked styrene-divinylbenzene copolymer having immobilized dithiocarbamate groups bound thereto.
    Type: Grant
    Filed: July 15, 1999
    Date of Patent: February 18, 2003
    Assignee: SolmeteX, Inc.
    Inventors: Richard A. Hamilton, Scott P. Fulton, Ted M. Shields