Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8105720 | Humidity sensing device for use in fuel cell systems | Christian Koenig, Ulrich Dumke | 2012-01-31 |
| 7938386 | Fuel cell air humidifier | Christian Koenig, Thomas Wollstadt, Thomas Hild | 2011-05-10 |