Toshihiko Okamoto

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Kohokuku, Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
N-(2-Chloro-4-pyridyl) ureas
- Patent number RE31550
- Issue date Apr 10, 1984
- Shudo; Koichi
- Koichi Shudo
- 071 - Chemistry: fertilizers
Information Patent Grant
Plant growth regulators
- Patent number 4,397,678
- Issue date Aug 9, 1983
- Okamoto; Toshihiko
- Toshihiko Okamoto
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Pyridazine urea plant growth regulators
- Patent number 4,331,807
- Issue date May 25, 1982
- Okamoto; Toshihiko
- Toshihiko Okamoto
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
N-(2,6-Disubstituted-4-pyridyl)-N'-phenylureas
- Patent number 4,308,054
- Issue date Dec 29, 1981
- Yo Isogai
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
N-(2-Substituted-4-pyridyl)ureas and thioureas as well as plant gro...
- Patent number 4,279,639
- Issue date Jul 21, 1981
- Okamoto; Toshihiko
- Toshihiko Okamoto
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
N-(2-Chloro-4-pyridyl)ureas
- Patent number 4,193,788
- Issue date Mar 18, 1980
- Koichi Shudo
- C07 - ORGANIC CHEMISTRY