Patents by Inventor Manfred Witzgall

Manfred Witzgall 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).

  • Column clamping device for chromatography
    Patent number: 4451365
    Abstract: The device is a clamping and sealing apparatus for use with separation columns, i.e., chromatographic columns. Sealing elements having sealing means extending therefrom are provided at each end of a column with at least one being movable in an axial direction and controlled by pressure generating means. The sealing members are shaped corresponding to the ends of the column to fit flush against the column and to provide a seal when actuated by the pressure generating means.
    Type: Grant
    Filed: October 29, 1982
    Date of Patent: May 29, 1984
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Gunther Sattler, Werner Gunkel, Manfred Witzgall, Reinhard Look