Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5615188 | Recording method and recording and reproducing apparatus for optical disk | Takashi Ishida, Shunji O'Hara, Kenzo Ishibashi | 1997-03-25 |
| 5559782 | Recording method and recording and reproducing apparatus for optical disk | Takashi Ishida, Shunji O'Hara, Kenzo Ishibashi | 1996-09-24 |
| 5467330 | Recording method and recording and reproducing apparatus for optical disk | Takashi Ishida, Shunji O'Hara, Kenzo Ishibashi | 1995-11-14 |
| 5375111 | Optical information recording medium, and audio and video information recording method | Takashi Ishida, Shunji Ohara | 1994-12-20 |
| 5331620 | Recording method and recording apparatus for optical disk | Takashi Ishida, Shunji O'Hara, Kenzo Ishibashi | 1994-07-19 |
| 5268654 | Phase locked loop clock changeover apparatus in which the VCO is set to an initial value | Mayumi Hironaka, Chikashi Inokuchi, Kenzo Ishibashi | 1993-12-07 |