Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6084484 | Programmable precise frequency divider | Herman Chang | 2000-07-04 |
| 6020833 | Method and interface circuit for scanning keys and external resistors in keypad | Herman Chang | 2000-02-01 |
| 5668544 | Compound type of keyboard detector | Herman Chang | 1997-09-16 |