Patents by Inventor Stefan Wermuth

Stefan Wermuth 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).

  • Chromatography precolumn
    Patent number: 4710289
    Abstract: The application relates to a precolumn for a chromatography column in cartridge from which is packed with a sorbent and has been provided with frit and sealing elements, the precolumn being composed of an outer holder and, emplaceable therein, an inner sorbent-packed column ring.
    Type: Grant
    Filed: February 27, 1987
    Date of Patent: December 1, 1987
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Stefan Wermuth, Gunter Hauke, Klaus Kreher