Patents by Inventor Leo F. Van Roojj

Leo F. Van Roojj 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 of preparing a radiodiagnostic comprising a gaseous radionuclide, as well as a radionuclide generator suitable for using said method
    Patent number: 5254328
    Abstract: The invention relates to a method of preparing a radiodiagnostic comprising a gaseous radionuclide formed by radioactive decay of a parent nuclide, by eluting with a suitable eluent the radioactive daughter nuclide from the parent nuclide provided ionically on a carrier, by using as a carrier for the parent nuclide ions a membrane, in particular an ion exchange membrane, past which the eluent is made to flow.The invention further relates to a radionuclide generator suitable for using said method.
    Type: Grant
    Filed: January 23, 1992
    Date of Patent: October 19, 1993
    Assignee: Mallinckrodt Medical, Inc.
    Inventors: Jacobus D. M. Herscheid, Leo F. Van Roojj