Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6870674 | Lens sheet and method of manufacturing the same | Makoto Ookawa, Masao Hamada, Akira Motonaga, Yukichi Konami | 2005-03-22 |
| 6674492 | Filter and image device with filter | Makoto Matsumoto | 2004-01-06 |
| 6628460 | Lens sheet and method for producing the same | Makoto Ookawa, Masao Hamada, Akira Motonaga, Yukichi Konami | 2003-09-30 |