Issued Patents 2004
Showing 1–7 of 7 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, 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 | Akira Kikitsu, Toshihiko Nagase | 2004-11-30 |
| 6805935 | Optical recording medium | Sumio Ashida, Keiichiro Yusu, Naomasa Nakamura, Noritake Ohmachi | 2004-10-19 |
| 6750469 | Phase change nonvolatile storage device and drive circuit | Hiroaki Yoda | 2004-06-15 |
| 6744717 | Optical disk and optical disk drive | Akiko Hirao, Hideyuki Nishizawa, Toshihiko Nagase | 2004-06-01 |
| 6741524 | Thermally-assisted magnetic recording and reproducing device having an electron beam thermal source | Junichi Akiyama, Akira Kikitsu, Tsutomu Tanaka, Kuniyoshi Tanaka | 2004-05-25 |
| 6738335 | Optical recording medium, reproducing method, and reproducing apparatus | Kenji Todori, Toshihiko Nagase | 2004-05-18 |