Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6829031 | Liquid crystal display apparatus and optical device for use therein | Toru Numata, Yasuo Otsuka, Mikio Shiraishi, Koji Hirata, Naoyuki Ogura +3 more | 2004-12-07 |
| 6728031 | Projection-type picture display apparatus and screen used thereby | Koji Hirata | 2004-04-27 |