Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8753037 | Device for a device for the treatment, cooling or storage of a fluid such as a gas or a liquid | Frank Dirkskoetter | 2014-06-17 |
| 6145582 | Heat accumulator block for regenerated heat exchanger | Bernd Bolle, Lothar Stufchen, Franz-Josef Hagemann | 2000-11-14 |
| 5350475 | Method for making a component unit for heat exchanger | Siegfried Broda | 1994-09-27 |
| 4640067 | Floor board assembly | Franz-Josef Hagemann | 1987-02-03 |
| 4338994 | Modular panel heater having improved holder devices | Franz-Josef Hagemann | 1982-07-13 |