Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6654337 | Magneto-optical recording medium having pit pitch greater than groove pitch | Sohmei Endoh, Mitsuo Arima, Jun Shimizu, Etsuro Ikeda, Hirotaka Ozawa +2 more | 2003-11-25 |
| 6521317 | Optical recording medium | Toshihiro Akimori, Sohmei Endoh | 2003-02-18 |