Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6950441 | System and method to internetwork telecommunication networks of different protocols | Sivakumar Ravikumar | 2005-09-27 |
| 6775269 | Method and system for routing telephone calls between a public switched telephone network and an internet protocol network | Sivakumar Ravikumar, George A. Cowgill, Bo-Hun Chen, Ravindra K. Chillara, Atousa Raissyan +1 more | 2004-08-10 |