Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6741538 | Optical device for recording and reproducing information | Kazuo Momoo, Yuichi Takahashi | 2004-05-25 |
| 6674709 | Optical head apparatus | Junichi Asada, Seiji Nishiwaki, Yuichi Takahashi, Kenji Nagashima, Youichi Saitoh +1 more | 2004-01-06 |