Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6481898 | Ball bearing | Kenji Yakura, Hirotoshi Aramaki, Yukio Ooura, Akio Fujii, Sumio Sugita +2 more | 2002-11-19 |
| 6431761 | Cage for rolling bearing | Keijiro Yamaguchi, Manabu Ohori | 2002-08-13 |