Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851029 | Thiazolylalkyl esters of .alpha.-imidazolinonenicotinic acids and herbicidal methods of use | Henry Szczepanski | 1989-07-25 |
| 4824466 | Heterocyclylalkyl esters of 2-imidazolinonenicotinic acids | Henry Szczepanski | 1989-04-25 |
| 4824471 | Heterocyclylalkyl esters of 2-imidazolinonenicotinic acids | Henry Szczepanski | 1989-04-25 |