Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5363220 | Diffraction device | Tetsuro Kuwayama, Yoko Yoshinaga, Nobuo Kushibiki | 1994-11-08 |
| 5329384 | Color image reading apparatus with volume hologram | Michitaka Setani | 1994-07-12 |