Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6124243 | Method of controlling graminaceous weeds | Yasuo Ishida, Kazunari Ohta | 2000-09-26 |
| 5534482 | Herbicidal imidazo[1,2-a]pyridin-3-ylsulfonylurea | Yasuo Ishida, Kazunari Ohta | 1996-07-09 |
| 5017212 | Sulfonylurea compounds and herbicidal use | Yasuo Ishida, Kazunari Ohta, Tatsuo Nakahama | 1991-05-21 |
| 4443246 | Herbicidal pyridyl-ethoxy-phenyl urea derivatives | Yutaka Kawamatsu, Takahiro Saraie | 1984-04-17 |