Issued Patents All Time
Showing 101–125 of 125 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7054087 | Magnetic recording-reproducing apparatus | Tadashi Kai, Toshihiko Nagase, Tomoyuki Maeda, Junichi Akiyama | 2006-05-30 |
| 6982845 | Magnetic recording apparatus and magnetic recording method | Tadashi Kai, Masayuki Takagishi, Masashi Sahashi, Junichi Akiyama, Hitoshi Iwasaki | 2006-01-03 |
| 6972923 | Magnetic recording medium and magnetic recording/reproducing apparatus using the same | Junichi Akiyama, Tadashi Kai, Toshihiko Nagase, Tomoyuki Maeda, Hisanori Aikawa | 2005-12-06 |
| 6930847 | Magnetic recording-reproducing apparatus | Tadashi Kai, Toshihiko Nagase, Tomoyuki Maeda, Junichi Akiyama | 2005-08-16 |
| 6894857 | Magnetic recording apparatus and method of designing the same | Junichi Akiyama | 2005-05-17 |
| 6881495 | Magnetic recording medium including functional and recording layers orthogonally exchange coupled | Tadashi Kai, Junichi Akiyama | 2005-04-19 |
| 6830824 | Magnetic recording medium with multiple magnetic layers capable of being exchange coupled at elevated temperatures and magnetic recording apparatus | Junichi Akiyama, Katsutaro Ichihara, Tadashi Kai, Toshihiko Nagase, Tomoyuki Maeda | 2004-12-14 |
| 6826144 | Optical recording medium, optical recording and/or reproducing method, and optical recording and/or reproducing system | Katsutaro Ichihara, Toshihiko Nagase | 2004-11-30 |
| 6795380 | Optically-assisted magnetic recording head and optically-assisted magnetic recording apparatus | Junichi Akiyama, Tadashi Kai, Toshihiko Nagase, Tomoyuki Maeda | 2004-09-21 |
| 6777078 | Magnetic recording medium with L10 crystal grains including three or more elements | Tomoyuki Maeda, Toshihiko Nagase, Junichi Akiyama | 2004-08-17 |
| 6741524 | Thermally-assisted magnetic recording and reproducing device having an electron beam thermal source | Katsutaro Ichihara, Junichi Akiyama, Tsutomu Tanaka, Kuniyoshi Tanaka | 2004-05-25 |
| 6636460 | Thermally-assisted magnetic recording method and thermally-assisted magnetic recorder | Junichi Akiyama, Katsutaro Ichihara | 2003-10-21 |
| 6602620 | Magnetic recording apparatus, magnetic recording medium and manufacturing method thereof | Katsutaro Ichihara | 2003-08-05 |
| 6493164 | Magnetic recording apparatus and method of magnetic recording | Katsutaro Ichihara | 2002-12-10 |
| 6296915 | Optical recording medium | Keiichiro Yusu, Sumio Ashida, Toshihiko Nagase, Katsutaro Ichihara, Naomasa Nakamura +2 more | 2001-10-02 |
| 6240060 | Phase change optical recording medium | Sumio Ashida, Keiichiro Yusu, Katsutaro Ichihara | 2001-05-29 |
| 6174597 | Magnetic recording apparatus | Keiichiro Yusu, Katsutaro Ichihara, Hideo Ogiwara, Futoshi Nakamura | 2001-01-16 |
| 6014296 | Magnetic disk, method of manufacturing magnetic disk and magnetic recording apparatus | Katsutaro Ichihara, Kohichi Tateyama | 2000-01-11 |
| 5981054 | Magnetic recording medium and method for manufacturing the same | Takashi Hikosaka, Tsutomu Tanaka, Yoichiro Tanaka, Katsutaro Ichihara, Keiichiro Yusu | 1999-11-09 |
| 5780135 | Magnetic disc apparatus | Katsutaro Ichihara | 1998-07-14 |
| 5729408 | Magnetic recording/reproducing apparatus having a magnetic head with a linearly movable arm provided with a plurality of recording/reproducing elements | — | 1998-03-17 |
| 5652054 | Magnetic recording media having a magnetic thin film made of magnetic metals grains and nonmagnetic matrix | Katsutaro Ichihara, Hitoshi Iwasaki, Atsuhito Sawabe | 1997-07-29 |
| 5412627 | A magneto-optical recording system including a recording medium having a reversal preventive layer for preventing a magnetization reversal of a bias layer which is magnetostatically coupled to a recording layer | Katsutaro Ichihara, Sumio Ashida, Yumi Mizusawa | 1995-05-02 |
| 5175714 | Method of magneto-optically recording/erasing information and magneto-optical information storage medium including recording and bias layers satisfying certain conditions | Katsutarou Ichihara, Sumio Ashida | 1992-12-29 |
| 5105400 | Method of magneto-optically recording and erasing information onto a magneto-optical information storage medium | Katsutarou Ichihara, Sumio Ashida | 1992-04-14 |