Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871391 | Herbicidal 5-substituted-2-4-imidazolidinediones | Siok H. H. Wee | 1989-10-03 |
| 4859228 | Novel 5-aminomethylene-2,4-imidazolidinediones and 5-aminomethylene-2-thionoimidazolidine-4-ones | — | 1989-08-22 |