Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7376057 | Disk recording apparatus and disk recording method | Hiroshi Hirayama, Takehiko Sekine | 2008-05-20 |
| 7215612 | Disk recording apparatus and disk recording method | Hiroshi Hirayama, Takehiko Sekine | 2007-05-08 |
| 5420844 | Information recording and reproducing apparatus for reducing average DC level variation | Naoto Kawakubo, Makoto Asari, Noritaka Narita | 1995-05-30 |