Issued Patents All Time
Showing 26–50 of 69 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D872192 | Electric scooter | — | 2020-01-07 |
| 10370053 | Powered personal mobility vehicle with rotating wheels | Robert Chen, William Griggs | 2019-08-06 |
| D852893 | Drifting kart | Ali Kermani, Robert Chen | 2019-07-02 |
| D839359 | Electric scooter | — | 2019-01-29 |
| 10099745 | Braking device for a personal mobility vehicle | Robert Chen | 2018-10-16 |
| D830469 | Drifting kart | Ali Kermani, Robert Chen | 2018-10-09 |
| D811489 | Electric scooter | Robert Chen | 2018-02-27 |
| D810836 | Electric scooter | — | 2018-02-20 |
| D793481 | Drifting kart | Ali Kermani, Robert Chen | 2017-08-01 |
| 9663178 | Powered personal mobility vehicle with rotating wheels | Robert Chen, William Griggs | 2017-05-30 |
| D774145 | Electric scooter | Robert Chen | 2016-12-13 |
| 9321504 | Braking device for a personal mobility vehicle | Robert Chen | 2016-04-26 |
| D748738 | Electric scooter | Robert Chen | 2016-02-02 |
| 9180927 | Powered personal mobility vehicle with rotating wheels | Robert Chen, William Griggs | 2015-11-10 |
| D717881 | Scooter | John A. Radtke, William Griggs | 2014-11-18 |
| 8820460 | Powered personal mobility vehicle with rotating wheels | Robert Chen, William Griggs | 2014-09-02 |
| 8813892 | Braking device for a personal mobility vehicle | Robert Chen | 2014-08-26 |
| 8720426 | Soft impact projectile launcher | Carlton Calvin | 2014-05-13 |
| 8662539 | Marking device for scooter and removable marking cartridge | — | 2014-03-04 |
| D693414 | Electric scooter | Robert Chen | 2013-11-12 |
| D692963 | Scooter | John A. Radtke, William Griggs | 2013-11-05 |
| D691671 | Caster scooter | Robert Chen | 2013-10-15 |
| D687904 | Projectile launcher | Carlton Calvin | 2013-08-13 |
| D687905 | Projectile launcher | Carlton Calvin | 2013-08-13 |
| D686674 | Scooter | Carlton Calvin | 2013-07-23 |