Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4640597 | Micro-reader | Takeshi Okano, Sadaaki Nakaoka | 1987-02-03 |
| 4629299 | Microform-reader | Takeshi Okano, Sadaaki Nakaoka | 1986-12-16 |
| 4525050 | Photographic camera with built-in optical converter | — | 1985-06-25 |
| 4214829 | Photographic camera with built-in optical converter | — | 1980-07-29 |