Patents by Inventor Christopher R. Bidell

Christopher R. Bidell 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 column
    Patent number: 5366621
    Abstract: A chromatography column piston 14 is adjustable in height within the column tube 4 by means of a friction clamp 22 which furthermore includes a threaded engagement with the associated end cap 8 of the column. As a result, with the friction clamp released the piston rod 16 can be rapidly traversed to or near a desired position, and the clamp then engaged following which cooperation of said threads allows fine tuning of the level of the piston 14 by fine adjustment of the position of the friction clamp relative to the end cap 8.
    Type: Grant
    Filed: October 28, 1993
    Date of Patent: November 22, 1994
    Assignee: Amicon Limited
    Inventors: Christopher R. Bidell, Colin K. Lanyl, Anthony F. Mann, Phillip Stafford