Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11648808 | Tire pressure sensor and burning device and burning method thereof | Ching-Hsiang Chang | 2023-05-16 |
| 7469461 | Method for making a diaphragm unit of a condenser microphone | Chao-Chih Chang, Ray-Hua Horng, Jean-Yih Tsai, Chung-Chin Lai | 2008-12-30 |