Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5673247 | Optical pickup having two objective lenses | Yoshihiro Sekimoto, Yasuo Nakata, Nobuo Ogata | 1997-09-30 |
| 5659528 | Information recording-reproduction method | Kunio Kojima, Yoshihiro Sekimoto, Yasuo Nakata, Nobuo Ogata, Toshiharu Inui | 1997-08-19 |