Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE31550 | N-(2-Chloro-4-pyridyl) ureas | Koichi Shudo, Toshihiko Okamoto, Yo Isogai | 1984-04-10 |
| 4397678 | Plant growth regulators | Toshihiko Okamoto, Yo Isogai, Koichi Shudo | 1983-08-09 |
| 4331807 | Pyridazine urea plant growth regulators | Toshihiko Okamoto, Yo Isogai, Koichi Shudo | 1982-05-25 |
| 4308054 | N-(2,6-Disubstituted-4-pyridyl)-N'-phenylureas | Yo Isogai, Koichi Shudo, Toshihiko Okamoto | 1981-12-29 |
| 4279639 | N-(2-Substituted-4-pyridyl)ureas and thioureas as well as plant growth regulators containing same, and method for using compounds as plant growth regulators | Toshihiko Okamoto, Yo Isogai, Koichi Shudo | 1981-07-21 |
| 4193788 | N-(2-Chloro-4-pyridyl)ureas | Koichi Shudo, Toshihiko Okamoto, Yo Isogai | 1980-03-18 |