Issued Patents All Time
Showing 26–30 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5486618 | Substituted 5-aminopyrazoles | Helmut Hagen, Gerhard Nilz, Helmut Walter | 1996-01-23 |
| 5422335 | Herbicides containing substituted 2-aminothiophenes | Helmut Hagen, Gerhard Nilz, Helmut Walter | 1995-06-06 |
| 5420307 | 2-amino-4-oxo-4H-benzopyrans, their preparataion and their use as antidotes | Helmut Hagen, Gerhard Nilz, Helmut Walter, Wolfgang Freund | 1995-05-30 |
| 5378677 | Thiochromenone derivatives as antidotes, and herbicides containing them | Helmut Hagen, Peter Raatz, Helmut Walter | 1995-01-03 |
| 5326743 | Piperazine-2,3-diones as plant growth regulators | Costin Rentzea, Albrecht Harreus, Helmut Walter, Wilhelm Rademacher | 1994-07-05 |