Issued Patents 2005
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6980494 | Optical disc recording method and apparatus, optical disc, and optical disc reproducing apparatus | — | 2005-12-27 |
| 6977880 | Multi-layered disc and multi-layered disc reproducing apparatus | — | 2005-12-20 |
| 6965551 | Recording disk and recording apparatus having a copy prevention feature | — | 2005-11-15 |