Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6819650 | Optical disc having land pre-pits and variable groove depths | Kenichi Shimomai, Toyohito Asanuma, Tsutomu Matsumoto, Fumitaka Tsuji | 2004-11-16 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6819650 | Optical disc having land pre-pits and variable groove depths | Kenichi Shimomai, Toyohito Asanuma, Tsutomu Matsumoto, Fumitaka Tsuji | 2004-11-16 |