Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11180217 | Multiple bicycle sprocket assembly | Koji Tokuyama, Toshinari Oishi, Kenji Kamada, Sota Yamaguchi | 2021-11-23 |
KO
Kenji Ose
Overall (2021): #375,419 of 548,734Top 70%
1
Patents 2021