Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6815871 | Drive mechanism and drive method employing circuit for generating saw-tooth waveform voltage | Ryuichi Yoshida | 2004-11-09 |
| 6803699 | Drive mechanism employing electromechanical transducer and drive method therefor | Ryuichi Yoshida | 2004-10-12 |
| 6717329 | Drive mechanism employing electromechanical transducer and method for controlling the drive mechanism | Ryuichi Yoshida, Junichi Tanii, Yasuhiro Okamoto | 2004-04-06 |