Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6823528 | Protective film for optical disks and optical disk using the film | Takeshi Yamasaki, Kazuya Katoh | 2004-11-23 |
| 6780262 | Multilayer disc manufacturing apparatus, and disc bonding method | Takeshi Yamasaki, Motohisa Haga | 2004-08-24 |
| 6707787 | Optical recording medium | Takeshi Yamasaki, Toshiyuki Kashiwagi | 2004-03-16 |