Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D778991 | Bearing for a yo-yo | Hiroshi Nishizawa | 2017-02-14 |
| D748705 | Linear guide | Yoshio Tsunoda | 2016-02-02 |
| D748740 | Bearing for yo-yo | Hiroshi Nishizawa | 2016-02-02 |
HS
Haruo Sekido
Overall (All Time): #1,488,799 of 4,157,543Top 40%
3
Patents All Time