Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6815030 | Optical information recording medium | Toshio Ishida, Shinichi Kato | 2004-11-09 |
| 6699591 | Optical information recording medium | Toshio Ishida | 2004-03-02 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6815030 | Optical information recording medium | Toshio Ishida, Shinichi Kato | 2004-11-09 |
| 6699591 | Optical information recording medium | Toshio Ishida | 2004-03-02 |