Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6683845 | Optical recording medium, method of producing same, and optical recording and reproduction device | Koichiro Kishima, Isao Ichimura, Kiyoshi Osato, Kimihiro Saito | 2004-01-27 |
| 6683846 | Information recording disc having an anti-reflection layer and information recording/reproducing apparatus | Koichiro Kishima, Isao Ichimura, Kiyoshi Osato | 2004-01-27 |