Issued Patents 2003
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6663935 | Disk-like multilayer information recording medium and production method thereof | Takeshi Yamasaki, Motohiro Furuki, Tomomi Yukumoto | 2003-12-16 |
| 6636476 | Optical recording medium with a substrate of two different resin layers | Nobuyuki Arakawa, Yuji Akiyama | 2003-10-21 |
| 6613396 | Optical disc and method for manufacturing same | Masato Nishida, Tetsuhiro Sakamoto, Motohiro Furuki | 2003-09-02 |
| 6580681 | Optical disk with information signal representing a character, method and apparatus | — | 2003-06-17 |
| 6524418 | Method of production of multilayer optical recording medium | Takeshi Yamasaki, Tomomi Yukumoto, Yuji Akiyama, Eijiro Kikuno | 2003-02-25 |