Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6744707 | Optical head device, inclination detection apparatus using the same, and optical information processing apparatus using the same | Kousei Sano, Shin-ichi Kadowaki, Hiroaki Yamamoto, Ken'ichi Kasazumi | 2004-06-01 |
| 6728192 | Tracking error signal detection system for optical recording medium | Shin-ichi Kadowaki, Shinichi Tanaka, Seiji Nishiwaki, Kousei Sano | 2004-04-27 |