Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 6449496 | Voice recognition user interface for telephone handsets | Scott Beith, Ning Bi, Chienchung Chang, Karthick Chinnaswami, Andrew P. DeJaco +2 more | 2002-09-10 | $24,998,000 |
| 6330247 | Communication protocol between a communication device and an external accessory | Chienchung Chang, Way-Shing Lee, George Pan, Karthick Chinnaswami, Hanchi Huang +2 more | 2001-12-11 | $144,181,000 |