Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6788137 | Switching amplifier and signal amplifying method | — | 2004-09-07 |
| 6700801 | Switching power supply capable of ac to dc conversion | Toshiyuki Yamagishi | 2004-03-02 |
| 6680854 | Switching power supply | Toshiyuki Yamagishi | 2004-01-20 |