Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6925045 | Optical pickup having two wavelength laser and simple structure | Masayoshi Sugawara | 2005-08-02 |
| 6404591 | Magnetic head having cut-out portions for different recording density head cores | Yoichi Maki | 2002-06-11 |