Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4866183 | Preparation of hexaarylbisimidazoles | Toni Dockner, Helmut Karn, Thomas Bluemel, Reinhold J. Leyrer, Thomas Loerzer | 1989-09-12 |
| 4828715 | Cleaning and disposal of carbon black and ash containing wastewaters | Bruno Sander, Siegfried Marquardt, Gero Lueth, Robert K. Horn | 1989-05-09 |
| 4803283 | Preparation of 4(5)-nitroimidazole-5(4)-carboxylic acids | Toni Dockner, Hermann Koehler | 1989-02-07 |