Patents by Inventor Sven Bornbaum

Sven Bornbaum 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).

  • Multi-layer membrane-electrode-assembly (ML-MEA) and method for its manufacture
    Patent number: 8361674
    Abstract: The invention relates to the field of electrochemical cells and fuel cells, more specifically to polymer-electrolyte-membrane fuel cells (PEMFC) and direct methanol fuel cells (DMFC). A multi-layer membrane-electrode-assembly (ML-MEA) comprising two electrically conductive bipolar plates and a membrane-electrode-assembly (MEA) bonded together by means of an electrically insulating adhesive material is disclosed. The adhesive material, preferably a polyurethane-based system, is in direct contact with the protective film layers attached to front side and the back side of the MEA, thus contamination of the ionomer membrane and/or the electrode layers with adhesive components is avoided. Multi-layer MEAs with improved long term stability and life time are obtained. The products are used for the manufacture of low temperature PEMFC and DMFC stacks.
    Type: Grant
    Filed: April 12, 2005
    Date of Patent: January 29, 2013
    Assignee: Umicore AG & Co. KG
    Inventors: Ralf Zuber, Knut Fehl, Peter Seipel, Sven Bornbaum
  • Multi-Layer Membrane-Electrode-Assembly (Ml-Mea) and Method for Its Manufacture
    Publication number: 20070231689
    Abstract: The invention relates to the field of electrochemical cells and fuel cells, more specifically to polymer-electrolyte-membrane fuel cells (PEMFC) and direct methanol fuel cells (DMFC). A multi-layer membrane-electrode-assembly (ML-MEA) comprising two electrically conductive bipolar plates and a membrane-electrode-assembly (MEA) bonded together by means of an electrically insulating adhesive material is disclosed. The adhesive material, preferably a polyurethane-based system, is in direct contact with the protective film layers attached to front side and the back side of the MEA, thus contamination of the ionomer membrane and/or the electrode layers with adhesive components is avoided. Multi-layer MEAs with improved long term stability and life time are obtained. The products are used for the manufacture of low temperature PEMFC and DMFC stacks.
    Type: Application
    Filed: April 12, 2005
    Publication date: October 4, 2007
    Applicant: UMICORE AG & CO KG
    Inventors: Ralf Zuber, Knut Fehl, Peter Seipel, Sven Bornbaum