Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877875 | 1-Substituted alkyl-2-oxo-hexahydroquinoxaline derivatives | Masao Yaso, Yukio Suzuki, Eiichi Hayashi | 1989-10-31 |
| 4877877 | 1-substituted alkyl-2-oxo-hexahydroquinoxaline derivatives | Masao Yaso, Yukio Suzuki, Eiichi Hayashi | 1989-10-31 |
| 4870171 | 1-Substituted alkyl-2-oxo-1,2-dihydroquinoxaline derivatives | Masao Yaso, Yukio Suzuki, Eiichi Honda, Hiroyuki Kinoshita, Noriyasu Takayanagi +2 more | 1989-09-26 |
| 4870176 | 1-Substituted alkyl-1,2-dihydro-2-pyrazinone derivatives | Masao Yaso, Yukio Suzuki, Eiichi Hayashi | 1989-09-26 |
| 4837319 | 1-substituted alkyl-1,2-dihydro-2-pyrazinone derivatives | Masao Yaso, Yukio Suzuki, Eiichi Hayashi | 1989-06-06 |