Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6816206 | Polarizing illumination optical system and projection-type display device which uses same | — | 2004-11-09 |
| 6773111 | Projection type image display apparatus | — | 2004-08-10 |
| 6736505 | Progressive power spectacle lens | — | 2004-05-18 |
| 6738196 | Zoom lens with distortion correction and projection optical apparatus using it | — | 2004-05-18 |