Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6754143 | Optical information recording medium, and method and apparatus for recording/reproducing information thereon | Kenichi Nishiuchi, Kenji Narumi | 2004-06-22 |
| 6744706 | Optical system with tracking controller | Naoyasu Miyagawa, Yasuhiro Gotoh | 2004-06-01 |