Issued Patents All Time
Showing 26–32 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6380566 | Semiconductor device having FET structure with high breakdown voltage | Tomoko Matsudai, Yusuke Kawaguchi, Kazutoshi Nakamura, Akio Nakagawa | 2002-04-30 |
| 6188653 | Optical storage medium and apparatus and method of reproducing data therefrom using different laser power | Hideharu Eguchi | 2001-02-13 |
| 6122245 | Optical recording medium and reproducing apparatus for optical recording medium | Tetsuya Kondo | 2000-09-19 |
| 5841861 | Optical recording medium and reproducing apparatus for optical recording medium | Tetsuya Kondo | 1998-11-24 |
| 5696757 | Optical disc, device for checking optical disc and device for recording information on optical disc | Kazuhisa Ozaki, Kanji Kayanuma | 1997-12-09 |
| 5572507 | Optical disc, device for checking optical disc, and device for recording information on optical disc | Kazuhisa Ozaki, Kanji Kayanuma | 1996-11-05 |
| 5570339 | Optical disc and a recording and/or reproducing apparatus having copy-protection function | — | 1996-10-29 |