Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6693854 | Reproducing method and reproducing apparatus for magneto-optical recording medium | Katsusuke Shimazaki, Susumu Imai, Norio Ohta, Hiroyuki Awano, Hitoshi Watanabe +1 more | 2004-02-17 |
| 6584044 | Magneto-optical recording apparatus using multiple magnetic field strengths for recording different mark lengths | Manabu Tani, Hiroyuki Awano, Masaki Sekine | 2003-06-24 |
| 6567348 | Method for recording mark length shorter than channel bit length on magneto-optical medium | Kouichirou Wakabayashi, Manabu Tani | 2003-05-20 |
| 6556516 | Reproducing method and reproducing apparatus for magneto-optical recording medium using different radiation patterns | Katsusuke Shimazaki, Susumu Imai, Norio Ohta, Hiroyuki Awano, Hitoshi Watanabe +1 more | 2003-04-29 |
| 6477118 | METHOD AND APPARATUS FOR RECORDING AND REPRODUCING INFORMATION BY APPLYING FIELD IN A DIRECTION OTHER THAN THE DIRECTION OF MAGNETIZATION OR THE DIRECTION TO A SURFACE OF AN INFORMATION RECORDING MEDIUM | Hiroyuki Awano, Masaki Sekine, Manabu Tani, Hiroshi Ido | 2002-11-05 |
| 6434088 | Recording and reproducing apparatus having a magneto-optical head with an objective lens and laser-beam-permeable member | Osamu Ishizaki, Katsusuke Shimazaki, Toshinori Sugiyama, Susumu Imai | 2002-08-13 |
| 6424601 | Magneto-optical recording media having an auxiliary magnetic layer | Satoru Oonuki, Nobuyuki Nagai, Katsusuke Shimazaki, Hiroyuki Awano, Hiroshi Shirai +3 more | 2002-07-23 |
| 6388954 | Magneto-optical recording medium having clock-marks on recording layer and apparatus for recording and reproducing same | Hiroyuki Awano, Katsusuke Shimazaki, Hiroki Takao, Norio Ohta, Akiyoshi Itou +3 more | 2002-05-14 |
| 6385141 | Magneto-optical recording method capable of adjusting the sizes magnetic domain | Manabu Tani, Hiroyuki Awano, Masaki Sekine | 2002-05-07 |
| 6385140 | Magneto-optical recording medium and reproducing method for reproducing magnetic domain in enlarged form on a reproducing layer | Satoru Ohnuki, Norio Ohta, Katsusuke Shimazaki, Hiroki Takao, Hitoshi Watanabe | 2002-05-07 |
| 6366541 | Optical recording medium with solid protective layer having self-lubricating property | Satoru Ohnuki, Toshinori Sugiyama, Tsuyoshi Maro | 2002-04-02 |
| 6246640 | Magneto-optical recording medium capable of recording multiple value signals | Katsusuke Shimazaki, Akito Sakemoto, Norio Ohta, Osamu Ishizaki, Satoru Ohnuki +2 more | 2001-06-12 |
| 6226234 | Magneto-optic recording medium and reproducing method for reproducing magnetic domain in enlarged form on a reproducing layer | Satoru Ohnuki, Norio Ohta, Katsusuke Shimazaki, Hiroki Takao, Hitoshi Watanabe | 2001-05-01 |
| 6160769 | Optical recording medium and optical recording device | Satoru Ohnuki, Toshinori Sugiyama, Tsuyoshi Maro | 2000-12-12 |
| 6101153 | Magnetic head capable of generating multi-stepped external magnetic fields for magneto-optical recording device | Katsusuke Shimazaki, Akito Sakemoto, Norio Ohta, Osamu Ishizaki, Satoru Ohnuki +2 more | 2000-08-08 |
| 6061307 | Magneto-optical recording medium having a plurality of magnetic layers | Katsusuke Shimazaki, Akito Sakemoto, Norio Ohta, Osamu Ishizaki, Satoru Ohnuki +2 more | 2000-05-09 |
| 6044041 | Recording and reproducing apparatus having a magneto-optical head with an objective lens and laser-beam-permeable member | Osamu Ishizaki, Katsusuke Shimazaki, Toshinori Sugiyama, Susumu Imai | 2000-03-28 |
| 5965286 | Magneto-optical recording medium | Satoru Ohnuki, Katsusuke Shimazaki, Norio Ohta, Hideo Fujiwara, Noriyuki Ogihara +1 more | 1999-10-12 |
| 5783320 | Magneto-optical recording medium and process for producing the same | Katsusuke Shimazaki, Satoru Ohnuki, Masatoshi Hashimoto, Yoshinori Shirai, Norio Ohta +4 more | 1998-07-21 |
| 5639563 | Magneto-optical recording medium | Satoru Ohnuki, Katsusuke Shimazaki, Norio Ohta, Hideo Fujiwara, Noriyuki Ogihara +1 more | 1997-06-17 |
| 5637411 | Magneto-optical recording medium and process for producing the same | Katsusuke Shimazaki, Satoru Ohnuki, Masatoshi Hashimoto, Yoshinori Shirai, Norio Ohta +4 more | 1997-06-10 |
| 5590097 | Magnetooptic recording medium | Akira Kashiwakura, Katsusuke Shimazaki, Shin-Itsu Kinoshita, Norio Oota, Hisanori Sugiyama | 1996-12-31 |
| 5315577 | Optical recording/reproducing by changing perpendicular magnetic anisotropy to non-perpendicular magnetic anisotropy | Fumiyoshi Kirino, Junko Nakamura, Ryo Suzuki, Yukinori Yamada, Norio Ohta | 1994-05-24 |