Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6246640 | Magneto-optical recording medium capable of recording multiple value signals | Katsusuke Shimazaki, Masafumi Yoshihiro, Akito Sakemoto, Norio Ohta, Osamu Ishizaki +2 more | 2001-06-12 |
| 6101153 | Magnetic head capable of generating multi-stepped external magnetic fields for magneto-optical recording device | Katsusuke Shimazaki, Masafumi Yoshihiro, Akito Sakemoto, Norio Ohta, Osamu Ishizaki +2 more | 2000-08-08 |
| 6061307 | Magneto-optical recording medium having a plurality of magnetic layers | Katsusuke Shimazaki, Masafumi Yoshihiro, Akito Sakemoto, Norio Ohta, Osamu Ishizaki +2 more | 2000-05-09 |