Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D517173 | Infrared sensitive water feeder | Tzu-Chieh Chan | 2006-03-14 |
| 6827294 | External supply system | Tzu-Chieh Chan | 2004-12-07 |
| 6420737 | External infrared rays control switch device for controlling output water on faucets | — | 2002-07-16 |