Patents by Inventor Andreas Walfort

Andreas Walfort 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).

  • Patent number: 6074555
    Abstract: The invention relates to improved chromatographic support materials, to the preparation thereof and to the use thereof as sorbent for chromatography. The particles of these materials have hydrophobic surfaces consisting of fatty acid esters in the pores and hydrophilic outer surfaces. The materials according to the invention permit direct separation of protein-containing samples by means of reverse phase methods.
    Type: Grant
    Filed: April 3, 1995
    Date of Patent: June 13, 2000
    Assignee: Merck Patent Gesellschaft mit Beschrankter Haftung
    Inventors: Karl Siegfried Boos, Andreas Walfort, Friedhelm Eisenbeiss, Dieter Lubda