Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5521749 | Optical modulation apparatus | — | 1996-05-28 |
| 5185831 | Optical waveguide device | — | 1993-02-09 |
| 5050947 | Optical waveguide control device employing directional coupler on substrate | Hiroshi Nishimoto | 1991-09-24 |