Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6755121 | Cooking chamber with excess pressure and/or low pressure | — | 2004-06-29 |
| 6547554 | Combustion system, a method of adapting the performance of the combustion system and a cooking device utilizing the combustion system | Rudolf Koegl, Manfred Lichtenstern, Roland Hegmann, Simon Pattermann, Franz Koch +1 more | 2003-04-15 |
| 6076518 | Steam generator | Maarten Joannes Botman | 2000-06-20 |
| 5931657 | Gas burner | Maarten Joannes Botman | 1999-08-03 |
| 5295457 | Heat exchanger | Gerd Gumienny, Franz Koch | 1994-03-22 |
| 5199416 | Hot air heat exchanger | Gerd Gumienny, Franz Koch | 1993-04-06 |
| 4991545 | Steam generator for cooking equipment having a decalcification means | Hermann Rabe, Ladislav Lafuntal, Siegfried Meister | 1991-02-12 |