Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5663841 | Optical pickup device having a magnetic circuit whose poles are configured along a common path within one pole within a focus coil | Osamu Ueda, Masayuki Koyama, Shigeyuki Sasanuma | 1997-09-02 |
| 5629809 | Optical pickup for reproducing information on a disc | Toshihiko Kurihara, Osamu Ueda, Shinichi Takahashi | 1997-05-13 |