Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11180217 | Multiple bicycle sprocket assembly | Koji Tokuyama, Kenji Ose, Toshinari Oishi, Kenji Kamada | 2021-11-23 |
| 10927940 | Bicycle sprocket | Toshinari OOISHI | 2021-02-23 |
SY
Sota Yamaguchi
Overall (2021): #110,839 of 548,734Top 25%
2
Patents 2021