Patents by Inventor Thomas Ryskamp

Thomas Ryskamp 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).

  • Regioselective synthesis of DTPA derivatives
    Patent number: 6207858
    Abstract: The present invention provides a process for high yield regioselective synthesis of DTPA derivatives that eliminates the need for ion exchange chromotographic separation of intermediates. Moreover, as this process yields a single regioisomer of the chelate, it provides for the regiospecific synthesis of desired chelates useful as radiolabeling agents.
    Type: Grant
    Filed: March 3, 1999
    Date of Patent: March 27, 2001
    Assignee: IDEC Pharmaceuticals Corporation
    Inventors: Paul Chinn, Albert Gyorkos, Michael J. LaBarre, Steve Ruhl, Thomas Ryskamp