Issued Patents 2004
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6833173 | Floppy disk including a seed layer and a primer layer with specified relative properties | Makoto Nagao | 2004-12-21 |
| 6829201 | Magnetic information recording medium having regions magnetized in different directions, a method for recording and reproducing for the same, and a method of manufacturing the same | Kazuyuki Usuki, Yoshihisa Usami, Makoto Nagao | 2004-12-07 |
| 6819511 | Magnetic transfer method and magnetic recording medium | — | 2004-11-16 |
| 6816327 | Master information carrier for magnetic transfer and magnetic transfer method | Kazuhiro Niitsuma, Tadashi Yasunaga, Toshihiro Usa, Kazunori Komatsu | 2004-11-09 |
| 6802321 | Master medium cleaning method | Akito Kamatani | 2004-10-12 |
| 6804069 | Magnetic transfer method to prevent dropout of servo signal | Seiichi Watanabe | 2004-10-12 |
| 6790534 | Magnetic transfer master medium, magnetic transfer method, and magnetic transfer master medium forming method | Kazunori Komatsu | 2004-09-14 |
| 6785069 | Magnetic transfer method | Seiichi Watanabe | 2004-08-31 |
| 6777073 | Magnetic recording medium | Junichi Nakamikawa | 2004-08-17 |
| 6759183 | Master medium for magnetic transfer including metal disk with relief or recess pattern | Makoto Nagao, Seiichi Watanabe | 2004-07-06 |
| 6735026 | Method of magnetically transferring information signal from master medium to slave medium | Makoto Nagao | 2004-05-11 |
| 6731440 | Method and apparatus for magnetic transfer | Kazunori Komatsu, Makoto Nagao | 2004-05-04 |
| 6678101 | Method of magnetically transferring information signal from master medium to slave medium | Kazuyuki Usuki, Masashi Aoki | 2004-01-13 |
| 6674645 | High frequency signal switching unit | Tsunehiro Anzai, Kazuhiko Inoue, Kazuhisa Fujii | 2004-01-06 |