Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887273 | Intercalation compound and generator of coherent radiation using the same | Seiichi Tanuma, Katsuya Okabe, Toshio Katsuyama | 1989-12-12 |
| 4289822 | Light-sensitive film | Toshikazu Shimada, Yoshifumi Katayama | 1981-09-15 |