Patents by Inventor Thomas H. Jeffers

Thomas H. Jeffers 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).

  • Polymer beads containing an immobilized extractant for sorbing metals from solution
    Patent number: 5279745
    Abstract: Polymer beads are prepared containing an immobilized extractant for sorbing metal contaminants at concentrations of less than 1 mg/L in dilute aqueous solutions. A preferred polymer is polysulfone and the extractant can be a biomass material or a synthetic chemical compound sorbed into activated carbon. The polymer beads are prepared by dissolving the polymer in an organic solvent to form a solution, adding the extractant to the solution to form a mixture and injecting the mixture through a nozzle into water to form the beads.
    Type: Grant
    Filed: December 26, 1991
    Date of Patent: January 18, 1994
    Assignee: The United States of America as represented by the Secretary of the Interior
    Inventors: Thomas H. Jeffers, Don C. Seidel