Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6778478 | Optical disk recording apparatus and method of recording data on optical disk | Akira Mashimo, Kaname Hayasaka | 2004-08-17 |
| 6731573 | Optical disk device with means for adjusting writing focus offset | — | 2004-05-04 |