Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7211219 | Oil-impregnant sintered bearing and manufacturing method thereof, and motor | Tsuneo Maruyama, Junichi Iguchi, Kenji Nishio, Takeshi Tanaka | 2007-05-01 |
| 6599018 | Oil-impregnant sintered bearing and manufacturing method thereof, and motor | Tsuneo Maruyama, Junichi Iguchi, Kenji Nishio, Takeshi Tanaka | 2003-07-29 |