Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6650599 | Method and apparatus for determining power level of laser beam in magneto-optical recording device | Naoyuki Takagi, Atsushi Yamaguchi | 2003-11-18 |
| 6492035 | Magneto-optical recording medium with intermediate layer having a controlled saturation magnetization | Atsushi Yamaguchi, Naoyuki Takagi, Hitoshi Noguchi | 2002-12-10 |
| 6483783 | Magneto-optical disk apparatus capable of accurately enlarging and reproducing a magnetic domain and method of reproducing the same | Naoyuki Takagi, Hitoshi Noguchi, Hiroki Ishida, Atsushi Yamaguchi, Morio Nakatani | 2002-11-19 |
| 6388955 | Reproducing method for magneto-optic recording medium, and magneto-optic disk device | Naoyuki Takagi, Atsushi Yamaguchi | 2002-05-14 |
| 6370089 | Magneto-optical recording medium simplifying transfer of magnetic domain | Atsushi Yamaguchi | 2002-04-09 |
| 6298026 | Magneto-optical head apparatus using evanescent light | Yoshihisa Suzuki, Sayoko Tanaka | 2001-10-02 |
| 6295253 | Magnetooptical disk unit capable of recording or reproducing signals having different domain lengths under the same conditions, signal recording method and signal reproducing method | Naoyuki Takagi, Hitoshi Noguchi, Atsushi Yamaguchi, Hiroki Ishida | 2001-09-25 |
| 6256266 | Magneto-optical recording medium having lands and grooves of discontinue regions | — | 2001-07-03 |