Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6811889 | Magneto-optical recording medium having a GDFECO readout magnetic film | Yoshihiko Kudoh, Yasumori Hino, Yuuichi Fukamachi | 2004-11-02 |
| 6765847 | Optical disk and method of magnetically separating tracks of the optical disk | Yasumori Hino, Yasushi Hozumi, Tomoyuki Hiroki | 2004-07-20 |
| 6747919 | Magneto-optical recording medium, and method and apparatus for producing the same | Yuuko Kawaguchi, Motoyoshi Murakami, Tsutomu Shiratori, Yasuyuki Miyaoka | 2004-06-08 |
| 6690626 | Optical disk with magnetic layer separated magnetically between tracks and method of magnetically separating tracks of the optical disk | Tomoyuki Hiroki, Yasushi Hozumi | 2004-02-10 |