Issued Patents All Time
Showing 1–25 of 60 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7767285 | Phase-change optical recording medium | Tsukasa Nakai, Sumio Ashida, Keiichiro Yusu, Takayuki Tsukamoto, Noritake Oomachi +1 more | 2010-08-03 |
| 7626910 | Optical information recording medium for holographic recording and method of holographic recording in optical information recording medium | Akiko Hirao, Hisashi Yamada, Kazuki Matsumoto, Hideyuki Nishizawa | 2009-12-01 |
| 7498103 | Holographic recording medium and method of manufacturing the same | Akiko Hirao, Kazuki Matsumoto, Takayuki Tsukamoto, Rumiko Hayase | 2009-03-03 |
| 7494747 | Holographic recording medium | Akiko Hirao, Kazuki Matsumoto, Takayuki Tsukamoto, Rumiko Hayase | 2009-02-24 |
| 7455951 | Information recording medium and its manufacturing method | Sumio Ashida, Keiichiro Yusu, Toshihiko Nagase, Naomasa Nakamura | 2008-11-25 |
| 7357969 | Phase-change optical recording medium | Sumio Ashida, Keiichiro Yusu, Takayuki Tsukamoto, Noritake Oomachi, Naomasa Nakamura +1 more | 2008-04-15 |
| 7359306 | Holographic recording medium | Kazuki Matsumoto, Akiko Hirao, Hideyuki Nishizawa | 2008-04-15 |
| 7335459 | Phase-change optical recording medium | Sumio Ashida, Takayuki Tsukamoto, Keiichiro Yusu, Noritake Ohmachi, Naomasa Nakamura +1 more | 2008-02-26 |
| 7294382 | Phase-change optical recording medium | Tsukasa Nakai, Sumio Ashida, Keiichiro Yusu, Takayuki Tsukamoto, Noritake Oomachi +1 more | 2007-11-13 |
| 7291375 | Phase-change optical recording medium | Sumio Ashida, Keiichiro Yusu, Takayuki Tsukamoto, Noritake Oomachi, Naomasa Nakamura +1 more | 2007-11-06 |
| 7270916 | Recording medium | Akiko Hirao, Kazuki Matsumoto, Hideyuki Nishizawa, Naoko Kihara | 2007-09-18 |
| 7272107 | Optical recording medium having super resolution layer | Akira Kikitsu, Toshihiko Nagase | 2007-09-18 |
| 7254106 | Method and equipment for storing holographic data | Kazuki Matsumoto, Akiko Hirao, Rumiko Hayase | 2007-08-07 |
| 7245576 | Optical recording medium and optical recording-reproducing method | Sumio Ashida, Keiichiro Yusu, Kenji Todori, Takayuki Tsukamoto | 2007-07-17 |
| 7214416 | Phase-change optical recording medium | Tsukasa Nakai, Sumio Ashida, Keiichiro Yusu, Takayuki Tsukamoto, Noritake Oomachi +2 more | 2007-05-08 |
| 7132147 | Phase-change optical recording medium | Tsukasa Nakai, Sumio Ashida, Keiichiro Yusu, Takayuki Tsukamoto, Noritake Oomachi +1 more | 2006-11-07 |
| 7110348 | Optical information recording medium | Naomasa Nakamura, Keiichiro Yusu, Sumio Ashida | 2006-09-19 |
| 7095536 | Holographic recording medium and holographic recording medium manufacturing method | Akiko Hirao, Kazuki Matsumoto | 2006-08-22 |
| 7081328 | Optical disk having super-resolution film | Kenji Todori, Toshihiko Nagase, Naoko Kihara | 2006-07-25 |
| 7042810 | Thermally-assisted magnetic recording head, method of manufacturing the same, and thermally-assisted magnetic recording apparatus | Junichi Akiyama, Genichi Hatakoshi | 2006-05-09 |
| 7031037 | Holographic recording medium and holographic recording medium manufacturing method | Akiko Hirao, Kazuki Matsumoto | 2006-04-18 |
| 7011876 | Optical recording medium | Sumio Ashida, Keiichiro Yusu, Naomasa Nakamura, Noritake Ohmachi | 2006-03-14 |
| 6944116 | Optical information recording medium | Naomasa Nakamura, Keiichiro Yusu, Sumio Ashida | 2005-09-13 |
| 6842419 | Optical information recording medium and optical disk drive | Naomasa Nakamura, Sumio Ashida, Keiichiro Yusu, Noritake Oomachi | 2005-01-11 |
| 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 |