Patents by Inventor Andreas Graus

Andreas Graus 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: 6143174
    Abstract: There is disclosed a filtration unit for separating a substance from a fluid, the unit made up of at least one pleated filter element in a cylindrical housing, the housing in turn made up of two mating housing components and at least two fluid connectors, the filter element separating the housing into inlet and outlet plenums with the periphery of the filter element adjoining the wall of the cylindrical housing; the periphery of the filter element and the periphery of the two mating components are all bonded to each other by a single integral sealant bond.
    Type: Grant
    Filed: February 8, 1999
    Date of Patent: November 7, 2000
    Assignee: Sartorius AG
    Inventor: Andreas Graus
  • Patent number: 5885455
    Abstract: A fluid filtration unit having pleated filter media with at least one ply, and two housing parts with inlet and outlet fluid passageways and inwardly projecting ribs that accommodate the pleated filter media.
    Type: Grant
    Filed: December 24, 1997
    Date of Patent: March 23, 1999
    Assignee: Satorius AG
    Inventors: Andreas Graus, Michael Schutzler
  • Patent number: 4900441
    Abstract: In a small filter with a one-piece plastic housing (1) manufactured with injection-molding technology in which a filter membrane (6) is located which is connected on its edge in a leakproof manner to the housing (1), the filter membrane (6) is covered at least on one side on the edge area (6") to be sealed by the injection molding which hardens in the injection molding form and is anchored in this injection molding.
    Type: Grant
    Filed: February 6, 1989
    Date of Patent: February 13, 1990
    Assignee: Sartorius GmbH
    Inventors: Andreas Graus, Michael Schutzler