Patents Assigned to Pathophysiologisches Institut der Universitat Bern
  • Sieve filtration apparatus
    Patent number: 4001117
    Abstract: An apparatus for sieve filtration, and in particular ultrafiltration using a membrane as the filter, is particularly useful for filtering extremely small initial volumes, in particular of blood plasma or serum, in a pressurized cell with alternating flow direction of the liquid to be filtered, thus preventing concentration polarization, and preventing contact of the liquid to be filtered with any foreign substance such as a pressure gas.
    Type: Grant
    Filed: September 11, 1975
    Date of Patent: January 4, 1977
    Assignee: Pathophysiologisches Institut der Universitat Bern
    Inventor: Ulrich Trechsel