Issued Patents All Time
Showing 26–32 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6542316 | Wide-angle projection lens and a projection-type image display device | — | 2003-04-01 |
| 6522453 | Projection device and a projection lens | — | 2003-02-18 |
| 6219112 | Illumination optical system and liquid crystal projector apparatus using the same | Fumio Watanabe | 2001-04-17 |
| 6124978 | Projection lens | — | 2000-09-26 |
| 6115194 | Projection lens | — | 2000-09-05 |
| 6075648 | Projector-type display device | Chikara Yamamoto | 2000-06-13 |
| 6048079 | Illumination optical system for liquid crystal display | Chikara Yamamoto | 2000-04-11 |