Patents by Inventor David J. Pruett

David J. Pruett 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).

  • Separation of uranium from technetium in recovery of spent nuclear fuel
    Patent number: 4443413
    Abstract: Uranium and technetium in the product stream of the Purex process for recovery of uranium in spent nuclear fuel are separated by (1) contacting the aqueous Purex product stream with hydrazine to reduce Tc.sup.+7 therein to a reduced species, and (2) contacting said aqueous stream with an organic phase containing tributyl phosphate and an organic diluent to extract uranium from said aqueous stream into said organic phase.
    Type: Grant
    Filed: August 31, 1983
    Date of Patent: April 17, 1984
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: David J. Pruett, Donald R. McTaggart
  • Method for removing fluoride contamination from nitric acid
    Patent number: 4339309
    Abstract: Fluoride ions are removed from nitric acid solution by contacting the vaporized solution with alumina or zirconium.
    Type: Grant
    Filed: May 5, 1981
    Date of Patent: July 13, 1982
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: David J. Pruett, William B. Howerton