Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6811949 | Optical information recording medium and optical recording method | Takashi Ohno | 2004-11-02 |
| 6723410 | Optical recording medium | Takashi Ohno, Kenjiro Kiyono | 2004-04-20 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6811949 | Optical information recording medium and optical recording method | Takashi Ohno | 2004-11-02 |
| 6723410 | Optical recording medium | Takashi Ohno, Kenjiro Kiyono | 2004-04-20 |