Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7637664 | Composite roll bearing | Yoshihide Kiyosawa, Hiroki Hanaoka | 2009-12-29 |
| 6837623 | 4-point contact ball bearing | Norio Shirokoshi | 2005-01-04 |
| 6129648 | Planetary gear device | Yoshihiro Tanioka, Norio Shirokoshi, Hiroshi Nakagawa, Hiroshi Kameda | 2000-10-10 |
| 5931054 | Flexible meshing type gear drive having specific sequences of actual teeth removed | Norio Shirokoshi | 1999-08-03 |