Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7429234 | Oval track stepper | Ya-Chi Chen | 2008-09-30 |
| 7223208 | Exercise machine comprising two hand grips which are provided with a damping device | Ya-Chi Chen, Hsiung-Yao Yang | 2007-05-29 |
| 6641506 | Walking machine having two footboards capable of swiveling laterally | — | 2003-11-04 |
| 6190289 | Foldable elliptical exercise machine | Nathan Pyles, Kun-Chuan Lo, Kuei-Sen Chen | 2001-02-20 |
| 6149551 | Foldable elliptical exercise machine | Nathan Pyles, Kun-Chuan Lo, Kuei-Sen Chen | 2000-11-21 |