Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6833938 | Variable hologram element, and optical device using the same | — | 2004-12-21 |
| 6833966 | Optical system, and optical apparatus | Eiji Yasuda, Kentaro Sekiyama, Tetsuo Nagata | 2004-12-21 |
| 6738199 | Variable optical-property element | — | 2004-05-18 |