Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877875 | 1-Substituted alkyl-2-oxo-hexahydroquinoxaline derivatives | Masao Yaso, Yukio Suzuki, Kensuke Shibata | 1989-10-31 |
| 4877877 | 1-substituted alkyl-2-oxo-hexahydroquinoxaline derivatives | Masao Yaso, Yukio Suzuki, Kensuke Shibata | 1989-10-31 |
| 4870171 | 1-Substituted alkyl-2-oxo-1,2-dihydroquinoxaline derivatives | Masao Yaso, Yukio Suzuki, Eiichi Honda, Kensuke Shibata, Hiroyuki Kinoshita +2 more | 1989-09-26 |
| 4870175 | 6-substituted alkoxy-2-oxo-1,2-dihydroquinoxaline derivatives | Yukio Suzuki, Masao Yaso, Katumi Nisimura, Kenzi Saeki, Noriyasu Takayanagi +1 more | 1989-09-26 |
| 4870176 | 1-Substituted alkyl-1,2-dihydro-2-pyrazinone derivatives | Masao Yaso, Yukio Suzuki, Kensuke Shibata | 1989-09-26 |
| 4837319 | 1-substituted alkyl-1,2-dihydro-2-pyrazinone derivatives | Masao Yaso, Yukio Suzuki, Kensuke Shibata | 1989-06-06 |