Issued Patents 1994
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5353278 | Magneto-optical disk and method of manufacturing the same | Junichiro Nakayama, Hiroyuki Katayama, Akira Takahashi, Kenji Ohta, Hirotaka Toki | 1994-10-04 |
| 5331612 | Magneto-optical recording apparatus using the magnetic field modulation method | Kenji Ohta, Akira Takahashi | 1994-07-19 |
| 5328740 | Magneto-optical recording medium and method for processing the surface | Junichiro Nakayama, Hiroyuki Katayama, Kenji Ohta | 1994-07-12 |
| 5317555 | Optical head device utilizing partially overlapping light spots to read information from a readout layer | Akira Takahashi, Junsaku Nakajima, Kenji Ohta | 1994-05-31 |
| 5305300 | Magneto optical storage device using a multi-layer film of Pt/Co laminated sections | Kenji Ohta, Akira Takahashi, Junsaku Nakajima | 1994-04-19 |
| 5305254 | Magneto-optic memory device | Junichiro Nakayama, Ichiro Hiramatsu, Akira Takahashi, Kenji Ohta, Kazuo Van +1 more | 1994-04-19 |
| 5293359 | Magnetic recording and reproducing apparatus having a ferrimagnetic recording medium, a magnetic head and first and second light sources | Kenji Ohta, Akira Takahashi, Junsaku Nakajima, Junji Hirokane | 1994-03-08 |