Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8685200 | Process for manufacturing a catalyst-coated ionomer membrane with protective film layer | Klaus Schaack, Sandra Wittpahl, Alexander Kabza, Markus Maier | 2014-04-01 |
| 8394551 | Membrane electrode assembly for use in electrochemical devices | Sandra Wittpahl, Klaus Schaack, Holger Dziallas, Peter Seipel, Günther Vulpius +1 more | 2013-03-12 |
| 8361674 | Multi-layer membrane-electrode-assembly (ML-MEA) and method for its manufacture | Knut Fehl, Peter Seipel, Sven Bornbaum | 2013-01-29 |
| 8343321 | Membrane electrode unit for the electrolysis of water | Klaus Schaack, Sandra Wittpahl, Holger Dziallas, Peter Seipel, Pia Braun +1 more | 2013-01-01 |
| 8021796 | Catalyst-coated ionomer membrane with protective film layer and membrane-electrode-assembly made thereof | Klaus Schaack, Sandra Wittpahl, Alexander Kabza, Markus Maier | 2011-09-20 |
| 7993499 | Membrane electrode unit for the electrolysis of water | Klaus Schaack, Sandra Wittpahl, Holger Dziallas, Peter Seipel, Pia Braun +1 more | 2011-08-09 |
| 7754369 | Ink for producing membrane electrode assemblies for fuel cells | Karl-Anton Starz, Anita Krämer, Knut Fehl, Joachim Köhler, Sandra Wittpahl | 2010-07-13 |
| 7713502 | Process for recycling fuel cell components containing precious metals | Joachim Koehler, Matthias Binder, Volker Baenisch, Marco Lopez | 2010-05-11 |
| 7419740 | Membrane electrode unit for polymer electrolyte fuel cells and a process for the production thereof | Matthias Binder, Markus Vogt, Gerhard Heinz | 2008-09-02 |
| 6803143 | Gas diffusion structures and gas diffusion electrodes for polymer electrolyte fuel cells | Armin Bayer, Knut Fehl, Volker Bänisch, Thomas Lehmann | 2004-10-12 |
| 6720104 | PEM fuel cell stack | Armin Bayer, Heike Kuhnhold, Udo Stenke | 2004-04-13 |
| 6500217 | Process for applying electrode layers to a polymer electrolyte membrane strip for fuel cells | Karl-Anton Starz, Wolfgang Gottenauer, Knut Fehl, Manfred Diehl | 2002-12-31 |
| 6309772 | Membrane-electrode unit for polymer electrolyte fuel cells and processes for their preparation | Knut Fehl, Karl-Anton Starz, Udo Stenke | 2001-10-30 |
| 6156449 | Catalyst layer for polymer electrolyte fuel cells | Ralf Karch, Knut Fehl, Karl-Anton Starz | 2000-12-05 |
| 5882549 | Pastes for fired-on layers | Knut Fehl, Willi Peter, Elisabeth Kasper | 1999-03-16 |
| 5861222 | Gas diffusion electrode for membrane fuel cells and method of its production | Andreas Fischer, Hartmut Wendt | 1999-01-19 |