Issued Patents 2005
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6975460 | Projection lens apparatus and projection type image display apparatus | Hidehiro Ikeda, Koji Hirata, Junichi Ikoma | 2005-12-13 |
| 6963453 | Optical unit and image display apparatus | Satoshi Ohuchi, Taro Imahase, Tomohiro Miyoshi, Yasuo Otsuka, Takesuke Maruyama | 2005-11-08 |
| 6956624 | Optical projection apparatus, transmission type screen, and projection type image display apparatus | Koji Hirata, Naoyuki Ogura, Hidehiro Ikeda | 2005-10-18 |
| 6945651 | Optical unit and projection type projector apparatus using the same | Koji Hirata, Futoshi Yamasaki | 2005-09-20 |
| 6905213 | Projection apparatus and projection-type image display apparatus | Koji Hirata, Futoshi Yamasaki | 2005-06-14 |
| 6894729 | Optical projection apparatus, transmission type screen, and projection type image display apparatus | Koji Hirata, Naoyuki Ogura, Hidehiro Ikeda | 2005-05-17 |
| 6869184 | Polarized-light converting unit and projector using the same | Koji Hirata, Naoyuki Ogura | 2005-03-22 |