Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5386804 | Process for the addition of ferrocene to combustion or motor fuels | Hansjuergen Guttmann, Dieter Hoehr, Heinz-Kuno Schaedlich, Walter Thuenker | 1995-02-07 |
| 4955331 | Process for the operation of an Otto engine | Dieter Hohr, August-Wilhelm Preuss, Helmut Riegel | 1990-09-11 |
| 4946609 | Engine lubricating oil for diesel engines and process for operating a diesel engine | August-Wilhelm Pruess, Dieter Hoehr, Hansjuergen Guttman | 1990-08-07 |