Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6819647 | Optical information processor and optical element | Youichi Saitoh, Junichi Asada, Seiji Nishiwaki, Kenji Nagashima, Kazuo Momoo +1 more | 2004-11-16 |
| 6741538 | Optical device for recording and reproducing information | Kazuo Momoo, Hiroaki Matsumiya | 2004-05-25 |
| 6674709 | Optical head apparatus | Junichi Asada, Seiji Nishiwaki, Kenji Nagashima, Hiroaki Matsumiya, Youichi Saitoh +1 more | 2004-01-06 |