Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4866183 | Preparation of hexaarylbisimidazoles | Uwe Kempe, Helmut Karn, Thomas Bluemel, Reinhold J. Leyrer, Thomas Loerzer | 1989-09-12 |
| 4864030 | Preparation of 1-alkylimidazoles | Hermann Koehler, Helmut Karn | 1989-09-05 |
| 4845247 | 3,4,-dihydro-2H-pyrans | Wolfgang Spiegler, Norbert Goetz, Manfred Sauerwald, Rolf Fischer | 1989-07-04 |
| 4824956 | Reductive dehalogenation of halogen compounds | Herbert Krug, Heinz Nohe | 1989-04-25 |
| 4822918 | Reduction of organic sulfur compounds | Manfred Sauerwald | 1989-04-18 |
| 4803283 | Preparation of 4(5)-nitroimidazole-5(4)-carboxylic acids | Uwe Kempe, Hermann Koehler | 1989-02-07 |