Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880456 | Cyclohexenone derivatives, their preparation and their use for controlling undesirable plant growth | Michael Keil, Ulrich Schirmer, Hans Theobald, Rainer Becker, Bruno Wuerzer +1 more | 1989-11-14 |
| 4867784 | Cyclohexenone derivatives, preparation thereof and use thereof as herbicidal and plant growth regulator agents | Michael Keil, Wolfgang Spiegler, Dieter Jahn, Ulrich Schirmer, Bruno Wuerzer +3 more | 1989-09-19 |
| 4842638 | Herbicidal tetrahydro(thio)pyran-2,4-dione derivatives | Juergen Kast, Michael Keil, Ulrich Schirmer, Bruno Wuerzer, Norbert Meyer +2 more | 1989-06-27 |
| 4820331 | Cyclohexenone derivatives useful for regulating plant growth | Michael Keil, Ulrich Schirmer, Juergen Kast, Wilhelm Rademacher, Johann Jung | 1989-04-11 |
| 4812160 | Cyclohexenone derivatives, preparation and use thereof as herbicides | Dieter Jahn, Michael Keil, Ulrich Schirmer, Bruno Wuerzer, Norbert Meyer +2 more | 1989-03-14 |