Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11248654 | Oil impregnated sintered bearing and production method thereof | Hajime Kouno, Yoshinari Ishii, Tsuneo Maruyama, Kenji Orito | 2022-02-15 |
| 11073178 | Oil-impregnated sintered bearing and method for manufacturing the same | Hajime Kouno, Yoshinari Ishii, Tsuneo Maruyama, Kenji Orito | 2021-07-27 |
| 10570959 | Oil-retaining sintered bearing and method of producing the same | Hajime Kouno, Yoshinari Ishii | 2020-02-25 |