Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6893761 | Process for producing a membrane electrode assembly and the membrane electrode assembly produced thereby | Joachim Köhler, Anita Krämer, Karl-Anton Starz, Knut Fehl | 2005-05-17 |
| 6803143 | Gas diffusion structures and gas diffusion electrodes for polymer electrolyte fuel cells | Ralf Zuber, Knut Fehl, Volker Bänisch, Thomas Lehmann | 2004-10-12 |
| 6720104 | PEM fuel cell stack | Ralf Zuber, Heike Kuhnhold, Udo Stenke | 2004-04-13 |