Patents by Inventor Eli Ryssdal Andersen

Eli Ryssdal Andersen 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 production of DTPA-bis anhydride
    Patent number: 7541019
    Abstract: Process for the production of DTPA-bis(anhydride) by reacting DTPA with acetic anhydride in pyridine under elevated temperature wherein the molar amount of pyridine is equal to or less than 6 times the molar amount of DTPA.
    Type: Grant
    Filed: December 16, 2004
    Date of Patent: June 2, 2009
    Assignee: GE Healthcare AS
    Inventors: Eli Ryssdal Andersen, Lars Terje Holmaas, Vidar Olaisen