Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6798733 | Optical recording method and medium | Hiroyasu Inoue, Hajime Utsunomiya, Tatsuya Kato | 2004-09-28 |
| 6731590 | Optical recording medium containing a substrate, an intermediate layer having therein an amorphous material, the intermediate layer having a reflective layer thereon | Hideki Hirata | 2004-05-04 |
| 6677104 | Optical information medium | Tetsuro Mizushima, Hiroyasu Inoue, Hajime Utsunomiya | 2004-01-13 |