Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6762751 | Optical pointing device | — | 2004-07-13 |
| 6625555 | Variable resistance measuring loop having compensational function for environmental factors | Tsung-Yu Wang, Shih-Jen Kuo | 2003-09-23 |
| 6587095 | Method for forming switching circuit of keyboard without generating phantom phenomenon | Tsung-Yu Wang, Shih-Jen Kuo | 2003-07-01 |
| 6492948 | Antenna base | Ching-Chiang Yu | 2002-12-10 |
| 6420641 | Multimedia keyboard with instrument playing device | — | 2002-07-16 |