Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6050728 | Compound ball bearing type pulley | Rikuro Obara | 2000-04-18 |
| 6050729 | Compound ball bearing | Rikuro Obara | 2000-04-18 |
| 5826989 | Compound ball bearing | Rikuro Obara | 1998-10-27 |
| 5806989 | Compound ball bearing for swing arm unit and swing arm unit for hard disc drive device | Rikuro Obara | 1998-09-15 |
| 5803618 | Compound ball bearing | Rikuro Obara | 1998-09-08 |
| 5560717 | Compound ball bearing | Rikuro Obara | 1996-10-01 |
| 5556209 | Double-row ball bearing | Rikuro Obara | 1996-09-17 |