Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7430157 | Recording device, recording method, reproducing device, and reproducing method | Masatoshi Nishino, Junichi Horigome, Takayoshi Chiba, Hideo Tada, Shigeo Yamaguchi +1 more | 2008-09-30 |
| 6909681 | Optical disk and optical disk apparatus | Masayoshi Nagata, Ikuhiro Hideta | 2005-06-21 |
| 6906990 | Phase-change optical disk and optical disk apparatus | Masayoshi Nagata, Takayoshi Chiba, Shigeo Yamaguchi, Junichi Horigome | 2005-06-14 |
| 6633516 | ZCAV optical and method for accessing thereof | Hideo Tada | 2003-10-14 |