Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7239596 | Optical pickup device and optical recording medium driving apparatus | Ryo Saitoh, Fumihiko Ito, Makoto Itonaga | 2007-07-03 |
| 6527173 | System of issuing card and system of certifying the card | Kenji Narusawa, Kazunori Namiki, Toshiro Kohno, Tadashi Aizawa, Haruo Matsuo +1 more | 2003-03-04 |
| 6252685 | Optical recording medium and apparatus of judging fake thereof | — | 2001-06-26 |