Patents by Inventor Don C. Seidel

Don C. Seidel 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
  • Froth flotation of insoluble slimes from sylvinite ores
    Patent number: 4192737
    Abstract: Sylvinite ores are treated for removal of insoluble slimes by a froth flotation technique which includes flocculating the slimes with nonionic or polyacrylamide flocculants and thereafter utilizing a nonionic or an anionic flotation collector including a mixture of fuel oil or a fatty acid and a defoamer of the glycol ester or polyglycol ester type. The flocculated slimes may also be floated with a fatty acid collector alone at low pH conditions.
    Type: Grant
    Filed: September 15, 1978
    Date of Patent: March 11, 1980
    Assignee: The United States of America as represented by the Secretary of the Interior
    Inventors: Philip Thompson, Jerry L. Huiatt, Don C. Seidel