Issued Patents 1989
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870182 | 4-Hydroxy-quinoline-3-carboxylic | Klaus Grohe | 1989-09-26 |
| 4859773 | Preparation of 1,8-bridged 4-quinoline-3-carboxylic acids | Klaus Grohe | 1989-08-22 |
| 4851160 | Process for the preparation of benzoic acid derivatives | Uwe Petersen, Ernst Kysela, Klaus Grohe | 1989-07-25 |
| 4847375 | Antibacterial 1,8-bridged 4-quinoline-3-carboxylic acids | Klaus Grohe, Hans-Joachim Zeiler, Karl G. Metzger | 1989-07-11 |
| 4841059 | Pyridine-enamines | Klaus Grohe, Hans-Joachim Zeiler, Karl G. Metzger | 1989-06-20 |
| 4816451 | Antibacterial 1,8-bridged 4-quinolonecarboxylic acids | Klaus Grohe, Hermann Hagemann, Hans-Joachim Zeiler, Karl G. Metzger | 1989-03-28 |
| 4804760 | Process for the preparation of 4-hydroxy-quinoline-3-carboxylic acids | Klaus Grohe | 1989-02-14 |