Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6312480 | Solid fuel additive | Christoph Bahr, Harald Schwahn, Dietmar Posselt | 2001-11-06 |
| 5004478 | Motor fuel for internal combustion engines | Hans-Henning Vogel, Hans Peter Rath, Knut Oppenlaender | 1991-04-02 |
| 4435298 | Ammonium salts of polymaleic acids, and their use as corrosion inhibitors in mineral oils | Knut Oppenlaender, Karl Stork, Hans-Henning Vogel, Erich Schwartz | 1984-03-06 |