Patents by Inventor Robert L. Kochen

Robert L. Kochen 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).

  • Method for regenerating magnetic polyamine-epichlorohydrin resin
    Patent number: 5652190
    Abstract: Magnetic polymer resins capable of efficient removal of actinides and heavy metals from contaminated water are disclosed together with methods for making, using, and regenerating them. The resins comprise polyamine-epichlorohydrin resin beads with ferrites attached to the surfaces of the beads. Markedly improved water decontamination is demonstrated using these magnetic polymer resins of the invention in the presence of a magnetic field, as compared with water decontamination methods employing ordinary ion exchange resins or ferrites taken separately.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: July 29, 1997
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Robert L. Kochen, James D. Navratil
  • Removal of radioactive materials and heavy metals from water using magnetic resin
    Patent number: 5595666
    Abstract: Magnetic polymer resins capable of efficient removal of actinides and heavy metals from contaminated water are disclosed together with methods for making, using, and regenerating them. The resins comprise polyamine-epichlorohydrin resin beads with ferrites attached to the surfaces of the beads. Markedly improved water decontamination is demonstrated using these magnetic polymer resins of the invention in the presence of a magnetic field, as compared with water decontamination methods employing ordinary ion exchange resins or ferrites taken separately.
    Type: Grant
    Filed: May 7, 1993
    Date of Patent: January 21, 1997
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Robert L. Kochen, James D. Navratil