Patents by Inventor Hartmut Härtner

Hartmut Härtner 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).

  • Recovery of isoquercetin from bioflavanoid pastes
    Patent number: 6683164
    Abstract: The invention relates to a method for recovering high-purity isoquerectin from bioflavonoid pastes, that is from mother-liquor residues which are produced during the recovery of flavonoids, by extraction with a solvent mixture of methyl acetate and water.
    Type: Grant
    Filed: May 10, 2002
    Date of Patent: January 27, 2004
    Assignee: Merck Patent GmbH
    Inventors: Herwig Buchholz, Michael Jungnitz, Michael Grund, Ralf Rosskopf, Hartmut Härtner