Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6777057 | Phase-change optical recording medium and recording method and apparatus for the same | Kazunori Ito, Michiharu Abe, Makoto Harigaya, Takashi Shibaguchi, Eiko Suzuki +2 more | 2004-08-17 |
| 6741545 | Phase-change medium usable in phase-difference tracking | Michiaki Shinotsuka, Hajime Yuzurihara, Hiroshi Deguchi | 2004-05-25 |