Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874860 | Process for preparing 1,3,5-triazinetriones | Andreas Gunther, Karl H. Mohrmann, Thomas Schmidt | 1989-10-17 |
| 4824960 | Preparation of 1-aryl-5-amino-pyrazoles | Hermann Arold | 1989-04-25 |
| 4820847 | Process for the preparation of 4-substituted 1-aryl-5-amino-pyrazoles | Heinz-Jurgen Wroblowsky, Dietmar Bielefeldt | 1989-04-11 |