Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6663344 | Copper-based sintered alloy bearing and motor fuel pump | Tsuneo Murayama, Yoshio Ebihara | 2003-12-16 |
| 6524365 | Bearing made of graphite-dispersed copper-based sintered alloy and motorized fuel pump using this bearing | Tsuneo Maruyama, Yoshio Ebihara | 2003-02-25 |
| 5282688 | Sintered oil impregnated bearing and its manufacturing method | Takeshi Tanaka, Yoshiaki Hayashi | 1994-02-01 |