Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5351225 | Optical recording and reproducing apparatus having a plurality of light spots | Takashi Ishida, Shunji O'Hara, Toshio Satoh | 1994-09-27 |
| 5331620 | Recording method and recording apparatus for optical disk | Takashi Ishida, Shunji O'Hara, Tadashige Furutani | 1994-07-19 |