Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7003093 | Tone detection for integrated telecommunications processing | Raghavendra S. Prabhu, Stan Hsieh, Zhen Zhu, Anurag Bist | 2006-02-21 |
| 6738358 | Network echo canceller for integrated telecommunications processing | Anurag Bist, Stan Hsieh, Raghavendra S. Prabhu, Zhen Zhu | 2004-05-18 |