Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7224171 | Method for detecting output current of inverter and device therefor | Masahiko Nagai | 2007-05-29 |
| 6671191 | Electric power conversion apparatus | Narumi Yanagisawa, Hiroshi Sakaba | 2003-12-30 |
| 6611442 | Controlled rectifier equipment with sinusoidal waveform supply current | Hiroshi Sakaba | 2003-08-26 |
| 6496394 | Uninterruptible power system | Masahiko Nagai, Minoru Yanagisawa | 2002-12-17 |