Issued Patents 2004
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6830824 | Magnetic recording medium with multiple magnetic layers capable of being exchange coupled at elevated temperatures and magnetic recording apparatus | Akira Kikitsu, Junichi Akiyama, Katsutaro Ichihara, Tadashi Kai, Tomoyuki Maeda | 2004-12-14 |
| 6826144 | Optical recording medium, optical recording and/or reproducing method, and optical recording and/or reproducing system | Katsutaro Ichihara, Akira Kikitsu | 2004-11-30 |
| 6795380 | Optically-assisted magnetic recording head and optically-assisted magnetic recording apparatus | Junichi Akiyama, Akira Kikitsu, Tadashi Kai, Tomoyuki Maeda | 2004-09-21 |
| 6777078 | Magnetic recording medium with L10 crystal grains including three or more elements | Tomoyuki Maeda, Akira Kikitsu, Junichi Akiyama | 2004-08-17 |
| 6744717 | Optical disk and optical disk drive | Katsutaro Ichihara, Akiko Hirao, Hideyuki Nishizawa | 2004-06-01 |
| 6738335 | Optical recording medium, reproducing method, and reproducing apparatus | Kenji Todori, Katsutaro Ichihara | 2004-05-18 |