Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874778 | 1-carbamoyl-2-pyrazolines, composition containing them, and insecticidal and acaricidal method of using them | — | 1989-10-17 |
| 4870184 | 1.4-bis-pyridyl-2,3-diazabutadienes | Josef Ehrenfreund, Hans-Rudolf Waespe | 1989-09-26 |
| 4853396 | Pesticidal compositions | — | 1989-08-01 |
| 4812464 | Pesticidal 2-pyridyl-4,5-dihydro-1,3,4-thiadiazoles | Josef Ehrenfreund, Hans-Rudolf Waespe | 1989-03-14 |