Issued Patents All Time
Showing 1–25 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8487345 | Information recording and reproducing device | Takayuki Tsukamoto, Tsukasa Nakai, Akira Kikitsu, Takeshi Yamaguchi | 2013-07-16 |
| 8169879 | Optical recording system to record information with light | Yuuzo Kamiguchi | 2012-05-01 |
| 7883930 | Phase change memory including a plurality of electrically conductive bodies, and manufacturing method thereof | Takayuki Tsukamoto, Katsuyuki Naito | 2011-02-08 |
| 7858166 | Phase change recording medium | Tsukasa Nakai, Noritake Oomachi, Naomasa Nakamura, Keiichiro Yusu, Yasuhiro Satoh | 2010-12-28 |
| 7767285 | Phase-change optical recording medium | Tsukasa Nakai, Keiichiro Yusu, Takayuki Tsukamoto, Noritake Oomachi, Naomasa Nakamura +1 more | 2010-08-03 |
| 7736715 | Optical recording medium, and information recording/playback apparatus and method using the medium | Tsukasa Nakai, Noritake Oomachi, Naomasa Nakamura, Keiichiro Yusu, Yasuhiro Satoh | 2010-06-15 |
| 7643397 | Phase-change optical recording media and optical recording-reproducing apparatus | Tsukasa Nakai, Yasuaki Ootera, Keiichiro Yusu, Nobuhisa Yoshida, Koji Takazawa +1 more | 2010-01-05 |
| 7542404 | Optical recording media | Keiichiro Yusu, Tsukasa Nakai, Shinichi Tatsuta, Hideki Ito | 2009-06-02 |
| 7510753 | Phase-change optical recording media | Tsukasa Nakai, Keiichiro Yusu, Noritake Oomachi, Naomasa Nakamura | 2009-03-31 |
| 7510990 | Sputtering target, optical thin film and manufacturing method thereof using the sputtering target, and optical recording medium | Yasuhiro Satoh, Tsukasa Nakai, Shoko Suyama, Yoshiyasu Ito | 2009-03-31 |
| 7477586 | Optical disk apparatus for distinguishing recording media including single-layer and double-layer H-L media and L-H medium | Ryosuke Yamamoto | 2009-01-13 |
| 7455951 | Information recording medium and its manufacturing method | Katsutaro Ichihara, Keiichiro Yusu, Toshihiko Nagase, Naomasa Nakamura | 2008-11-25 |
| 7357969 | Phase-change optical recording medium | Katsutaro Ichihara, Keiichiro Yusu, Takayuki Tsukamoto, Noritake Oomachi, Naomasa Nakamura +1 more | 2008-04-15 |
| 7335459 | Phase-change optical recording medium | Takayuki Tsukamoto, Keiichiro Yusu, Katsutaro Ichihara, Noritake Ohmachi, Naomasa Nakamura +1 more | 2008-02-26 |
| 7294382 | Phase-change optical recording medium | Tsukasa Nakai, Keiichiro Yusu, Takayuki Tsukamoto, Noritake Oomachi, Naomasa Nakamura +1 more | 2007-11-13 |
| 7291375 | Phase-change optical recording medium | Katsutaro Ichihara, Keiichiro Yusu, Takayuki Tsukamoto, Noritake Oomachi, Naomasa Nakamura +1 more | 2007-11-06 |
| 7245576 | Optical recording medium and optical recording-reproducing method | Katsutaro Ichihara, Keiichiro Yusu, Kenji Todori, Takayuki Tsukamoto | 2007-07-17 |
| 7214416 | Phase-change optical recording medium | Tsukasa Nakai, Keiichiro Yusu, Takayuki Tsukamoto, Noritake Oomachi, Naomasa Nakamura +2 more | 2007-05-08 |
| 7132147 | Phase-change optical recording medium | Tsukasa Nakai, Keiichiro Yusu, Takayuki Tsukamoto, Noritake Oomachi, Naomasa Nakamura +1 more | 2006-11-07 |
| 7110348 | Optical information recording medium | Naomasa Nakamura, Keiichiro Yusu, Katsutaro Ichihara | 2006-09-19 |
| 7011876 | Optical recording medium | Keiichiro Yusu, Katsutaro Ichihara, Naomasa Nakamura, Noritake Ohmachi | 2006-03-14 |
| 6944116 | Optical information recording medium | Naomasa Nakamura, Keiichiro Yusu, Katsutaro Ichihara | 2005-09-13 |
| 6842419 | Optical information recording medium and optical disk drive | Naomasa Nakamura, Keiichiro Yusu, Katsutaro Ichihara, Noritake Oomachi | 2005-01-11 |
| 6805935 | Optical recording medium | Keiichiro Yusu, Katsutaro Ichihara, Naomasa Nakamura, Noritake Ohmachi | 2004-10-19 |
| 6554972 | Information recording medium and its manufacturing method | Katsutaro Ichihara, Keiichiro Yusu, Toshihiko Nagase, Naomasa Nakamura | 2003-04-29 |