Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D480662 | Electric vehicle for recreation and traveling | — | 2003-10-14 |
| 6588787 | Foldable electric vehicle for recreation and traveling | — | 2003-07-08 |
| D466839 | Foldable electric vehicle for recreation and travelling | — | 2002-12-10 |
| 6439835 | Pump shell for multistage metal working pump | Huan-Jan Chien, Shu-Fen Kao, Rong-Jau Liaw | 2002-08-27 |
| 6398493 | Floatable impeller for multistage metal working pump | Huan-Jan Chien, Shu-Fen Kao, Rong-Jau Liaw | 2002-06-04 |
| D454814 | Electric medical scooter | — | 2002-03-26 |
| 6267555 | Sheet metal casing for multistage pump and method for manufacturing the same | Huan-Jan Chien, Shu-Fen Kao, Rong-Jau Liaw | 2001-07-31 |
| 6220819 | Centrifugal pump impeller | Huan-Jan Chien, Shu-Fen Kao, Jing-Fuh Chen | 2001-04-24 |