Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5304565 | Nitrogen containing heterocyclic compounds, their production and use | Kohei Nishikawa | 1994-04-19 |
| 5284661 | Fused thiophene derivatives, their production and use | Kohei Nishikawa, Takehiko Naka | 1994-02-08 |