Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6957058 | Prepaid wireless telephone account regeneration in a wireless access protocol system | Jim H. Chan, Lalitha Suryanarayana | 2005-10-18 |
| 6487401 | Prepaid wireless telephone account regeneration in a wireless access protocol system | Lalitha Suryanarayana, Jim H. Chan | 2002-11-26 |
| 5850432 | Method and system for capturing and recording information associated with a dial-around call | Nailesh B. Desai | 1998-12-15 |