Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6665235 | Magneto-optical recording medium and recording and reproducing method and optical head designed for the magneto-optical recording medium | Yoshiteru Murakami, Junji Hirokane, Junichiro Nakayama, Akira Takahashi, Kenji Ohta +1 more | 2003-12-16 |
| 6556517 | Magneto-optical head device having integrated auxiliary lens and magnetic reproducing head and recording and reproducing device using magneto-optical head device | — | 2003-04-29 |
| 6532208 | Optical recording medium having prepits deeper than grooves | — | 2003-03-11 |