Patents by Inventor Herbert Graef

Herbert Graef 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 EXTRACTION OF BETULINIC ACID
    Publication number: 20070149490
    Abstract: Disclosed are large-scale industrial processes for obtaining highly pure betulinic acid from ground plane bark.
    Type: Application
    Filed: October 3, 2006
    Publication date: June 28, 2007
    Inventors: Carsten Puder, Herbert Graef, Markus Thumerer, Markus Heitzmann