Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6687203 | Optical recording medium, optical recording and reproducing device, and recording and reproducing method for the optical recording medium | Nobuo Ogata | 2004-02-03 |
| 6614720 | Optical pickup device | Nobuo Ogata, Makoto Horiyama, Kohji Minami, Takahiro Miyake, Yasuo Nakata | 2003-09-02 |