Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851160 | Process for the preparation of benzoic acid derivatives | Michael Schriewer, Ernst Kysela, Klaus Grohe | 1989-07-25 |
| 4840954 | 6,7-disubstituted 1-cycloproply-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acids | Klaus Grohe, Hans-Joachim Zeiler, Karl G. Metzger | 1989-06-20 |
| 4820716 | 7-(1-Pyrrolidinyl)-quinolonecarboxylic acid derivatives | Klaus Grohe, Hans-Joachim Zeiler, Karl G. Metzger | 1989-04-11 |
| 4806539 | 1-cyclopropy l-6-fluoro-1,4-dihydro-4-oxo-7-(1-piperazinyl)-3-quinolinecarboxylic acids and antibacterial agents containing them | Klaus Grohe, Hans-Joachim Zeiler, Karl G. Metzger | 1989-02-21 |