Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7153133 | Disposable prophy angle for an electric tooth polisher | Hui-Tsu Chia, Shui-Tao Tseng | 2006-12-26 |
| 7104796 | Disposable prophy angle for an electric tooth polisher | Hui-Tsu Chia, Shui-Tao Tseng | 2006-09-12 |