Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861367 | 2-Mercapto-5-pyrazinyl-1,3,4-oxadiazoles or 2-mercapto-5-pyrazinyl-1,3,4-thiadiazoles as nematicides | Robert Nyfeler, Wolfgang Eckhardt | 1989-08-29 |
| 4861787 | Nematicidal compositions | Wolfgang Eckhardt, Robert Nyfeler | 1989-08-29 |