Issued Patents All Time
Showing 101–112 of 112 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5367509 | Method for reproducing information recorded on a magneto-optical recording medium including servo controlling the dimension of the reproduction region of the recording medium by means of a recorded signal | Toshiki Udagawa, Shunji Yoshimura | 1994-11-22 |
| 5353277 | Optical disk having intertrack heat conduction suppression | Kouichi Yasuda, Masumi Ono | 1994-10-04 |
| 5338957 | Nonvolatile semiconductor device and a method of manufacturing thereof | Makoto Ohi, Hiroshi Onoda, Natsuo Ajika, Yuichi Kunori | 1994-08-16 |
| 5335213 | Positional detection of a magneto-optic recording medium for controlling irradiation of a relief region | Toshiki Udagawa, Shunji Yoshimura, Masumi Ono, Kouichi Yasuda | 1994-08-02 |
| 5304440 | Optical disk | Masumi Ono, Kouichi Yasuda | 1994-04-19 |
| 5303250 | Laser light generating apparatus | Hisashi Masuda, Kiyoshi Ohsato | 1994-04-12 |
| 5208799 | Magneto-optic recording method and magneto-optic recording/reproducing apparatus | Isamu Nakao, Toshiki Udagawa, Shunji Yoshimura | 1993-05-04 |
| 5191571 | Tracking control method and apparatus for an optical disc system | Kiyoshi Ohsato | 1993-03-02 |
| 5168482 | Magnetooptical recording and playback method employing multi-layer recording medium with record holding layer and playback layer | Katsuhisa Aratani, Masumi Ohta | 1992-12-01 |
| 5090004 | Tracking system for optical recording and/or reproducing apparatus employing a main light beam and a plurality of auxiliary light beams | Kiyoshi Ohsato | 1992-02-18 |
| 4766585 | Tracking error detecting apparatus for optical head | Kiyoshi Ohsato, Michio Oka | 1988-08-23 |
| 4742506 | Tracking error detecting apparatus for an optical head with skew error reduction by using an inclined header portion | Kiyoshi Ohsato, Yasunori Terayama | 1988-05-03 |