Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7109611 | Silicon-steel structure for motor | Yu-Wei Chuang, Po-Jen Shih | 2006-09-19 |
| 6612814 | Electrical fan having an oil retaining ring to prevent loss and evaporation of lubricant oil | Po-Jen Shih | 2003-09-02 |