Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6737836 | Control system for motor-generator | — | 2004-05-18 |
| 6456508 | Drive apparatus for vibrating-type compressor | Naoki Akazawa | 2002-09-24 |
| 6452290 | Balancing parallel inverter systems | Toru Yoshioka, Yuji Nakamura, Hidetake Hayashi, Hitoshi Takimoto | 2002-09-17 |
| 6171063 | Control circuit for vibrating compressors for protecting against excessive voltage and temperature | Naoki Akazawa | 2001-01-09 |
| 5742492 | Method of driving vibrating compressors | Naoki Akazawa | 1998-04-21 |