Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5317102 | 3,6-diamino-2,5-pyrazinedicarbonitrile | Tomio Yagihara, Nobuo Matsui, Atsushi Yanagisawa, Takakazu Kojima | 1994-05-31 |
| 5294711 | 3,6-diamino-2,5-pyrazinedicarbonitrile | Tomio Yagihara, Nobuo Matsui, Atsushi Yanagisawa, Takakazu Kojima | 1994-03-15 |