Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6826010 | Spindle motor | Hiroshi Yoshikawa | 2004-11-30 |
| 6671191 | Electric power conversion apparatus | Hiroyuki Hanaoka, Narumi Yanagisawa | 2003-12-30 |
| 6611442 | Controlled rectifier equipment with sinusoidal waveform supply current | Hiroyuki Hanaoka | 2003-08-26 |