Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6147428 | Rotor of electric motor | Nasaaju Takezawa, Keijiro Igarashi, Kazuhiko Arai | 2000-11-14 |
| 5666015 | Electric motor for a compressor with a rotor with combined balance weights and oil separation disk | Keijiro Igarashi, Tomonori Kinoshita, Takashi Miyauchi, Kazuhiko Arai | 1997-09-09 |