Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5101783 | Ignition system and spark plug for multiple ignition in an internal combustion engine | Martin Car | 1992-04-07 |
| 4979472 | Internal combustion engine having a hermetically sealed heat exchanger tube system | — | 1990-12-25 |
| 4372127 | Apparatus for heat transformation | Hans-Peter Doetsch | 1983-02-08 |
| 4312476 | Bivalent heating system | — | 1982-01-26 |
| 4241781 | Regenerative heater and process for the operation thereof | Axel Eschner | 1980-12-30 |