Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9544555 | Projection-type video-image-displaying device | Koji Hirata, Nobuyuki Kimura | 2017-01-10 |
| 7404646 | Projection lens apparatus and rear projection type image display apparatus | Shuji Kato, Hidehiro Ikeda, Naoyuki Ogura, Koji Hirata | 2008-07-29 |