Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9723458 | Push-to-talk telecommunications system utilizing an voice-over-IP network | Sriram Parameswar, Barbara Derryberry | 2017-08-01 |
| 9351139 | Location information for a mobile station | Ke-Chi Jang, Chung-Ching Wang | 2016-05-24 |
| 9014742 | Push-to-talk telecommunications system utilizing an voice-over-IP network | Sriram Parameswar, Barbara Derryberry | 2015-04-21 |
| 8854974 | Methods, systems, and computer readable media for deep packet inspection (DPI)-enabled traffic management for xDSL networks | — | 2014-10-07 |
| 8773981 | Systems and methods for dynamic congestion management in communications networks | Frederick C. Kemmerer, Jr. | 2014-07-08 |
| 8694041 | Push-to-talk telecommunications system utilizing an voice-over-IP network | Sriram Parameswar, Barbara Derryberry | 2014-04-08 |
| 8447341 | Push-to-talk telecommunications system utilizing a voice-over-IP network | Sriram Parameswar, Barbara Derryberry | 2013-05-21 |
| 8428237 | Push-to-talk wireless telecommunications system utilizing a voice-over-IP network | Sriram Parameswar, Barbara Derryberry | 2013-04-23 |
| 8213408 | Providing security in a multimedia network | Michael Flynn Thomas, Sriram Parameswar | 2012-07-03 |
| 8054761 | Providing security between network elements in a network | Michael Flynn Thomas, Sriram Parameswar | 2011-11-08 |
| 7826603 | Push-to-talk wireless telecommunications system utilizing a voice-over-IP network | Sriram Parameswar, Barbara Derryberry | 2010-11-02 |
| 7801953 | Push-to-talk wireless telecommunications system utilizing an voice-over-IP network | Sriram Parameswar, Barbara Derryberry | 2010-09-21 |
| 7738855 | Providing a location service in a wireless communications network using an indication of whether the location service is an emergency-related location service or a law enforcement-related location service | Ke-Chi Jang, Chung-Ching Wang | 2010-06-15 |
| 7457629 | Method and system for reporting the status of non-emergency-services position-determination capability | Ke-Chi Jang, Chung-Ching Wang | 2008-11-25 |
| RE39878 | Method and apparatus for network initiated parameter updating | Athena (Yau-Fan) Leung, Kevin Wambsganz, Kim Chang | 2007-10-09 |
| 7170863 | Push-to-talk wireless telecommunications system utilizing a voice-over-IP network | Sriram Parameswar, Barbara Derryberry | 2007-01-30 |
| 6549771 | Enhanced method and system for programming a mobile telephone over the air within a mobile telephone communication network | Kim Chang, Chenhong Huang | 2003-04-15 |
| 6490451 | System and method for providing packet-switched telephony | Don Jackson, Donald V. Hanley, Paul Boudreaux, Stewart H. Maxwell | 2002-12-03 |
| 6223028 | Enhanced method and system for programming a mobile telephone over the air within a mobile telephone communication network | Kim Chang, Chenhong Huang | 2001-04-24 |
| 6195546 | Method and apparatus for network initiated parameter updating | Yau-Fan Leung, Kevin Wambsganz, Kim Chang | 2001-02-27 |