Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10881819 | First-aid mask and inflatable structure thereof | Yung-Chu Cheng, Chien-Feng CHENG | 2021-01-05 |
| 7183698 | Piezoelectric structure | Chin-Wen Chou, Ying-Nan Cheng | 2007-02-27 |