Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4977157 | Aqueous preparation of 9-methyl-3-(1H-tetrazol-5-yl)-4H-pyrido[1,2-a])pyrimidin-4-one potassium salt | Takashi Yazaki | 1990-12-11 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4977157 | Aqueous preparation of 9-methyl-3-(1H-tetrazol-5-yl)-4H-pyrido[1,2-a])pyrimidin-4-one potassium salt | Takashi Yazaki | 1990-12-11 |