Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6801240 | Information recording with effective pulse control scheme | Michiharu Abe, Kenya Yokoi | 2004-10-05 |
| 6790504 | Phase-change optical information recording medium and information recording and reading method using the recording medium | — | 2004-09-14 |
| 6741545 | Phase-change medium usable in phase-difference tracking | Hajime Yuzurihara, Hiroshi Deguchi, Hiroko Tashiro | 2004-05-25 |