Patents by Inventor Philip E. Horwitz

Philip E. Horwitz 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).

  • Process for the separation and purification of yttrium-90 for medical applications
    Patent number: 5368736
    Abstract: An extraction chromatographic method for the preparation of .sup.90 Y of high chemical and radiochemical purity is disclosed. After an initial purification of a .sup.90 Sr stock solution and a suitable period of .sup.90 Y ingrowth, the solution is passed through a series of strontium-selective chromatographic columns, each of which lowers the .sup.90 Sr content of the mixture by a factor of about 10.sup.3. The .sup.90 Y remaining is freed from any residual .sup.90 Sr, from its .sup.90 Zr daughter, and from any remaining impurities by passing the sample through a final column designed to selectively retain yttrium.
    Type: Grant
    Filed: July 26, 1993
    Date of Patent: November 29, 1994
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Philip E. Horwitz, Mark L. Dietz