Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6649240 | Optical information recording medium | — | 2003-11-18 |
| 6562432 | Optical recording medium and method of manufacturing the optical recording medium | Ippei Ogawa, Tohru Yashiro, Yumi Mochizuki | 2003-05-13 |