Issued Patents 2005
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6975460 | Projection lens apparatus and projection type image display apparatus | Masahiko Yatsu, Koji Hirata, Junichi Ikoma | 2005-12-13 |
| 6956624 | Optical projection apparatus, transmission type screen, and projection type image display apparatus | Koji Hirata, Naoyuki Ogura, Masahiko Yatsu | 2005-10-18 |
| 6894729 | Optical projection apparatus, transmission type screen, and projection type image display apparatus | Koji Hirata, Naoyuki Ogura, Masahiko Yatsu | 2005-05-17 |
| 6857749 | Projection type display apparatus | Kenji Fuse, Mikio Shiraishi, Yasuo Otsuka, Nobuyuki Kaku | 2005-02-22 |