Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8072863 | Optical recording method, optical recording apparatus and optical storage medium | Hiroshi Tabata, Ikuo Matsumoto, Shinji Higuchi | 2011-12-06 |
| 7668071 | Phase-change optical recording medium having tracking signal smaller than saturation value | Kenichi Shimomai, Kazuo Yonehara, Ikuo Matsumoto, Hiroshi Tabata | 2010-02-23 |
| 7564769 | Phase-change recording medium having the relation between pulse patterns and reflectivity of un-recorded section | Ikuo Matsumoto, Hiroshi Tabata, Kazuo Yonehara, Kenichi Shimomai | 2009-07-21 |
| 7376065 | Optical recording method, optical recording apparatus and optical storage medium | Hiroshi Tabata, Ikuo Matsumoto, Kazuo Yonehara, Kenichi Shimomai | 2008-05-20 |
| 7336596 | Optical storage medium | Ikuo Matsumoto, Kenichi Shimomai, Hiroshi Tabata, Kazuo Yonehara | 2008-02-26 |
| 5648155 | Magnetic recording medium | Yoshiteru Matsubayashi, Masashi Yoshikawa, Jyunji Oshita, Yuji Ohata | 1997-07-15 |