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, Dai Kinno +2 more | 2002-11-19 |
| 6443623 | Lubrication system for rolling bearing | Yu Koiwa, Tamotsu Misawa | 2002-09-03 |