Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6833650 | Plane commutator of motor having a base made of conductive powder | Yusuke Hara, Syouichi Takenouchi, Satoshi Sugiyama, Masahiro Takahama, Kenzo Kiyose +1 more | 2004-12-21 |
| 6259183 | Carbon commutator | Tokio Hotta, Yoichi Sakaura | 2001-07-10 |