Patents by Inventor Matthias Gratzfeld

Matthias Gratzfeld 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).

  • Chemical process system with multi-functional barrier filter
    Patent number: 6902671
    Abstract: A barrier filter useful for aseptically discharging both gaseous and liquid fluids from a chemical process system is disclosed The barrier filter comprises, within a common enclosure, one or several filter membranes having singularly or collectively a mixture or hydrophobic and hydrophilic regions. The common enclosure of the barrier filter is provided with a fluid inlet and a fluid outlet. All filter membranes are located within the fluid path between the fluid inlet and the fluid outlet. A variety of membrane-based systems, into which such barrier filter is installed, are also disclosed.
    Type: Grant
    Filed: December 3, 2001
    Date of Patent: June 7, 2005
    Assignee: Millipore Corporation
    Inventors: Jean-Marc Cappia, Stephen Proulx, Stephen Tingley, Jack Messing, Matthias Gratzfeld
  • Chemical process system with multi-functional barrier filter
    Publication number: 20020096467
    Abstract: A barrier filter useful for aseptically discharging both gaseous and liquid fluids from a chemical process system is disclosed The barrier filter comprises, within a common enclosure, one or several filter membranes having singularly or collectively a mixture or hydrophobic and hydrophilic regions. The common enclosure of the barrier filter is provided with a fluid inlet and a fluid outlet. All filter membranes are located within the fluid path between the fluid inlet and the fluid outlet. A variety of membrane-based systems, into which such barrier filter is installed, are also disclosed.
    Type: Application
    Filed: December 3, 2001
    Publication date: July 25, 2002
    Inventors: Jean-Marc Cappia, Stephen Proulx, Stephen Tingley, Jack Messing, Matthias Gratzfeld