Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5659424 | Projecting lens and image display device | Hiroki Yoshikawa, Shigeru Mori, Naoyuki Ogura | 1997-08-19 |
| 5590943 | Rear projection type image display apparatus and transmission type screen used therein | Takahiko Yoshida, Koji Hirata, Kiyoshi Wada, Hiroki Yoshikawa | 1997-01-07 |