Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6827999 | Optical information recording medium | Kazunori Ito, Nobuaki Onagi, Katsuyuki Yamada, Shinya Narumi | 2004-12-07 |
| 6790592 | Phase-change optical information recording medium | Makoto Harigaya, Katsuhiko Tani, Noriyuki Iwata, Kazunori Ito, Eiko Hibino +4 more | 2004-09-14 |
| 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, Hiroshi Deguchi, Hiroko Tashiro | 2004-05-25 |