Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7482073 | Cascade fuel cell system | Willi Bette, Detlev Coerlin | 2009-01-27 |
| 6226497 | Motor vehicle built-in unit for mobile phone | Peter Guntzer | 2001-05-01 |
| 6203935 | Method for operating a fuel cell system and fuel cell system | Walter Stuhler, Harry Gellert | 2001-03-20 |
| 6180271 | Method for operating a PEM fuel cell plant and PEM fuel cell plant | Walter Stuhler, Martin Keim | 2001-01-30 |
| 6110611 | Process for operation of a PEM fuel cell unit | Walter Stuhler, Martin Keim | 2000-08-29 |