Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6829208 | Optical disk reproducing method and reproducing device | Shigeru Furumiya, Hiromichi Ishibashi | 2004-12-07 |
| 6735158 | Multilayer optical disk, and method and device for recording optical information thereon | Shunji Ohara | 2004-05-11 |