Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7201173 | Dental floss holder | Chi-Ching Shen | 2007-04-10 |
| 6739572 | Timing lock device for a faucet | Chi-Ching Shen | 2004-05-25 |
| 6027045 | Water spraying gun | — | 2000-02-22 |
| 5794295 | Electrically operated oscillatory toothbrush | — | 1998-08-18 |
| 5749854 | Pneumatic controlled infusion device | — | 1998-05-12 |
| 5727286 | Door closer with a pneumatic dashpot | — | 1998-03-17 |
| 4732192 | Mechanism for water supply device | — | 1988-03-22 |
| 4456222 | Mechanism for water valve | — | 1984-06-26 |