Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8477636 | Method and system for providing updates on access network capability in an IP multimedia system network | — | 2013-07-02 |
| 6456842 | System and method for subscriber-controlled call back on busy in a cellular network | Kalpana Subramanian | 2002-09-24 |
| 6044269 | Method for enhanced control of mobile call delivery | — | 2000-03-28 |
| 5915218 | Method and apparatus for roamer port HLR barring | Yojak Vasa | 1999-06-22 |