Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 7158508 | Setting up calls over circuit and packet-switched resources on a network | Zhian Li, ZhongJin Yang, Hui-Lan Lu | 2007-01-02 | |
| 6724732 | Dynamic adjustment of timers in a communication network | Young-fu Chang, Jaap T. Erne, Stuart Mandel Garland, John Andrew Johnson, Richard A. Kamieniecki +4 more | 2004-04-20 | $17,063,000 |
| 5530724 | Echo canceler with automatic enablement/disablement on a per-call basis | William J. Atkins, Victor E. Tomberlin | 1996-06-25 |