Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4256483 | 2-Alkoxy pyridazinoquinazolinone derivatives as herbicides | Yoshinori Nakayama, Ryo Yoshida, Seizo Sumida, Shunichi Hashimoto | 1981-03-17 |
| 4237122 | Imidazolidinedione compounds, and their production and use | Shigeo Yamamoto, Yoshio Hisada, Yoshinori Nakayama, Chiyozo Takayama | 1980-12-02 |
| 4181732 | 1-Branched-alkylcarbonyl-3-(3,5-dihalophenyl)imidazolidine-2,4-diones | Chiyozo Takayama, Shigeo Yamamoto, Toshiro Kato, Yoshio Hisada, Yoshinori Nakayama | 1980-01-01 |