Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7929674 | Method and system for providing billing capability for a service node in an advanced intelligent network environment | Hwey Chang, Romel Khan, Michael Koptiw, Antoinette Rule, Tejanand Sarju | 2011-04-19 |
| 7257208 | Method and system for providing billing capability for a service node in an advanced intelligent network environment | Hwey Chang, Romel Khan, Michael Koptiw, Antoinette Rule, Tejanand Sarju | 2007-08-14 |
| 6980632 | Method and system for providing billing capability for a service node in an advanced intelligent network environment | Hwey Chang, Romel Khan, Michael Koptiw, Antoinette Rule, Tejanand Sarju | 2005-12-27 |