Patents by Inventor Helen G. Henry

Helen G. Henry 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 zirconium and uranium
    Patent number: 4381287
    Abstract: Zirconium- and uranium-containing hydrocarbon-amine solutions are treated for separation of zirconium and uranium by means of a process comprising: (1) selective stripping of zirconium with an aqueous chloride solution, and (2) scrubbing the resulting aqueous solution with chloride-loaded hydrocarbon-amine solution to selectively remove uranium, thereby yielding an aqueous zirconium solution of low uranium content.
    Type: Grant
    Filed: March 30, 1982
    Date of Patent: April 26, 1983
    Assignee: The United States of America as represented by the Secretary of the Interior
    Inventors: David J. MacDonald, Helen G. Henry
  • Separation of zirconium and uranium
    Patent number: 4330509
    Abstract: Zirconium is selectively precipitated from aqueous solutions containing zirconium and uranium by treatment with a precipitant consisting of tartaric acid or a tartrate.
    Type: Grant
    Filed: May 22, 1981
    Date of Patent: May 18, 1982
    Assignee: The United States of America as represented by the Secretary of the Interior
    Inventor: Helen G. Henry