Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6628602 | Optical information recording medium | Yasuyoshi Kawashima | 2003-09-30 |
| 6507557 | Optical recording medium and recording method therefor | Fumitaka Tsuji | 2003-01-14 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6628602 | Optical information recording medium | Yasuyoshi Kawashima | 2003-09-30 |
| 6507557 | Optical recording medium and recording method therefor | Fumitaka Tsuji | 2003-01-14 |