Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6801488 | Pre-pit detecting apparatus for optical recording medium | Masahiro Kato, Tatsuhiro Yone, Yuko Muramatsu, Shinji Suzuki | 2004-10-05 |
| 6731662 | Laser light intensity controller | Fumihiko Sano | 2004-05-04 |
| 6697398 | Laser light intensity controller | Fumihiko Sano | 2004-02-24 |