Issued Patents 1989
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883530 | Use of ammonium syngenite as a slow-acting nitrogen fertilizer | Walter Von Maessenhausen, Vilmos Czikkely | 1989-11-28 |
| 4867784 | Cyclohexenone derivatives, preparation thereof and use thereof as herbicidal and plant growth regulator agents | Michael Keil, Wolfgang Spiegler, Dieter Jahn, Dieter Kolassa, Ulrich Schirmer +3 more | 1989-09-19 |
| 4857103 | Influencing the development of crops with 7-chloroquinoline-8-carboxylic acids | Henning Rosebrock, Wilhelm Rademacher, Max Luib, Volker Fischer, Helmut Hagen +3 more | 1989-08-15 |
| 4842638 | Herbicidal tetrahydro(thio)pyran-2,4-dione derivatives | Juergen Kast, Michael Keil, Dieter Kolassa, Ulrich Schirmer, Bruno Wuerzer +2 more | 1989-06-27 |
| 4822400 | 1,3-dioxan-5-ylalkyltriazoles, their use for regulating plant growth, and agents for this purpose | Costin Rentzea, Hubert Sauter, Wolfgang Tuerk, Bernd Wenderoth, Winfried Richarz +1 more | 1989-04-18 |
| 4820331 | Cyclohexenone derivatives useful for regulating plant growth | Michael Keil, Ulrich Schirmer, Dieter Kolassa, Juergen Kast, Wilhelm Rademacher | 1989-04-11 |
| 4812160 | Cyclohexenone derivatives, preparation and use thereof as herbicides | Dieter Jahn, Michael Keil, Dieter Kolassa, Ulrich Schirmer, Bruno Wuerzer +2 more | 1989-03-14 |