Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7949071 | Signal processing system and information storage medium | Yuji Nagai, Chosaku Noda, Kazuo Watabe, Akihito Ogawa, Kazuto Kuroda +7 more | 2011-05-24 |
| 7643397 | Phase-change optical recording media and optical recording-reproducing apparatus | Tsukasa Nakai, Yasuaki Ootera, Sumio Ashida, Keiichiro Yusu, Koji Takazawa +1 more | 2010-01-05 |
| 7570566 | Optical disc, optical disc manufacturing method, and optical disc apparatus | Toshihiro Sugaya, Masato Otsuka, Naomasa Nakamura, Hisashi Yamada | 2009-08-04 |
| 7477592 | Optical disc, optical disc apparatus, optical disk reproducing method, and digital work publication | Toshihiro Sugaya, Naomasa Nakamura, Masato Otsuka | 2009-01-13 |
| 7408869 | Optical disk and optical disk apparatus | Koji Takazawa | 2008-08-05 |
| 7335459 | Phase-change optical recording medium | Sumio Ashida, Takayuki Tsukamoto, Keiichiro Yusu, Katsutaro Ichihara, Noritake Ohmachi +1 more | 2008-02-26 |
| 6167021 | Optical recording medium | Katsumi Suzuki | 2000-12-26 |
| 5796708 | Optical recording medium and recording system | Hideki Ohkawa, Motonari Matsubara, Tomohisa Yoshimaru, Satoru Koyahara | 1998-08-18 |
| 5654953 | Optical disk and method of manufacturing the same | Katsumi Suzuki | 1997-08-05 |
| 5652037 | Information recording medium | Hideki Ohkawa, Motonari Matsubara | 1997-07-29 |
| 5580632 | Information recording medium | Hideki Ohkawa, Motonari Matsubara | 1996-12-03 |