Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6634856 | Integrally formed stamped sheet-metal blades having 3D structure | Huan-Jan Chien, Yee-Ren Chen, Jing-Fuh Chen | 2003-10-21 |
| 6506023 | Integrally formed stamping sheet-metal blades having 3D structure | Huan-Jan Chien, Yee-Ren Chen, Jing-Fuh Chen | 2003-01-14 |
| 6439835 | Pump shell for multistage metal working pump | Huan-Jan Chien, Pao-Yin Ou, Shu-Fen Kao | 2002-08-27 |
| 6398493 | Floatable impeller for multistage metal working pump | Huan-Jan Chien, Pao-Yin Ou, Shu-Fen Kao | 2002-06-04 |
| 6267555 | Sheet metal casing for multistage pump and method for manufacturing the same | Huan-Jan Chien, Pao-Yin Ou, Shu-Fen Kao | 2001-07-31 |