Issued Patents 2005
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6967049 | Optical recording medium | Takashi Yamada, Tomoki Ushida | 2005-11-22 |
| 6953616 | Multi-layered optical recording medium | Tetsuro Mizushima, Jiro Yoshinari | 2005-10-11 |
| 6898796 | Optical information medium and making method | Kenji Yamaga, Hideki Hirata | 2005-05-24 |
| 6844045 | Method for making optical information medium and optical information medium | Hideki Hirata, Tomoki Ushida, Mamoru Usami | 2005-01-18 |