Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9026160 | Method and system for priority handling of dispatch call requests | — | 2015-05-05 |
| 8059613 | Implementing redirect on interoperability gateway for CDMA terminated PTT calls | Safwan A. Khan, Trinh D. Vu | 2011-11-15 |
| 8036648 | System and method for operating a user functionality in a mobile communications device | Safwan A. Khan | 2011-10-11 |
| 8027316 | Efficient selection of interoperability gateway for CDMA terminated PTT calls | Safwan A. Khan, Trinh D. Vu | 2011-09-27 |
| 7920862 | System and method for improved IMEI registration | Manish Sharma, Anthony Wei-Hsia Soong | 2011-04-05 |
| 7844256 | Enabling dispatch calls for long-distance-restricted subscribers | — | 2010-11-30 |
| 7822437 | System and method for dispatch roaming registration | Safwan A. Khan, Ojas T. Choksi, Arun Manroa | 2010-10-26 |
| 7813737 | Integrated digital enhanced network migrated subscriber mapping | — | 2010-10-12 |
| 7751797 | Systems and methods for providing presence information | — | 2010-07-06 |
| 7738856 | Systems and methods for prepaid dispatch communications | — | 2010-06-15 |
| 7684817 | Wireless communication system having a signaling gateway serving as an intermediary between a dispatch call controller and a base station | — | 2010-03-23 |
| 7636580 | Method and apparatus for handling integrated digital enhanced network calling restrictions | Safwan A. Khan | 2009-12-22 |
| 7574227 | System and method for dispatch calling using personal telephone numbers | — | 2009-08-11 |
| 7437171 | System and method for long distance dispatch calling restrictions | Arun Manroa | 2008-10-14 |
| 7142856 | System and method for providing subscriber presence information in a dispatch network | — | 2006-11-28 |
| 7139573 | System and method for improved IMEI registration | Manish Sharma, Anthony Wei-Hsia Soong | 2006-11-21 |