Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5613748 | Rear projection type image display apparatus and transmission type screen used therein | Koji Hirata, Atsuo Ohsawa, Kiyoshi Wada, Hiroki Yoshikawa | 1997-03-25 |
| 5590943 | Rear projection type image display apparatus and transmission type screen used therein | Koji Hirata, Atsuo Osawa, Kiyoshi Wada, Hiroki Yoshikawa | 1997-01-07 |