Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9222566 | Auto-locking torque distributing mechanism | Yu-An Hsieh | 2015-12-29 |
| 8202189 | Limited slip differential | Yu-An Hsieh | 2012-06-19 |
| 7560884 | Electronic braking and energy recycling system associated with DC brushless motor | Ying Shu, Bin Ma | 2009-07-14 |
| 5511276 | Toothbrush with replaceable bristle carrier | — | 1996-04-30 |