Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6770346 | Optical recording medium and recording method | Makoto Harigaya, Hiroshi Miura, Hiroko Okura, Miku Mizutani, Eiko Hibino +4 more | 2004-08-03 |
| 6741545 | Phase-change medium usable in phase-difference tracking | Michiaki Shinotsuka, Hajime Yuzurihara, Hiroko Tashiro | 2004-05-25 |