Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11446547 | Resistance sensing apparatus for exercise equipment | Yao-Jen Chang | 2022-09-20 |
| 10695613 | Resistance sensing apparatus for exercise equipment | Yao-Jen Chang | 2020-06-30 |
| 10675504 | Lateral glide elliptical exercise apparatus | Yao-Jen Chang | 2020-06-09 |