Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5565408 | Cyanoquinoline compounds | Helmut Hagen, Juergen Pfister, Gunter Brill, Bruno Wuerzer, Karl-Otto Westphalen | 1996-10-15 |
| 5561100 | Pyrido-fused 4-oxo-4H-benzopyrans, their preparation and their use as antidotes | Helmut Hagen, Helmut Walter, Andreas Landes | 1996-10-01 |
| 5491123 | Herbicides containing 3-aminobenzo(B)thiophenes as antidotes | Helmut Hagen, Thomas Roetsch, Helmut Walter, Andreas Landes | 1996-02-13 |
| 5486618 | Substituted 5-aminopyrazoles | Helmut Hagen, Helmut Walter, Andreas Landes | 1996-01-23 |
| 5422335 | Herbicides containing substituted 2-aminothiophenes | Helmut Hagen, Helmut Walter, Andreas Landes | 1995-06-06 |
| 5420307 | 2-amino-4-oxo-4H-benzopyrans, their preparataion and their use as antidotes | Helmut Hagen, Helmut Walter, Andreas Landes, Wolfgang Freund | 1995-05-30 |
| 5216171 | 2-amino-4-trichloropyridine derivatives | Helmut Hagen, Hans Ziegler, Juergen Pfister, Gisela Lorenz, Juergen Dressel | 1993-06-01 |