Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9094411 | Mechanism to resume filter criteria at a specific point | Angelica T. Remoquillo | 2015-07-28 |
| 8929256 | Third party charging for SIP sessions | Yigang Cai, Tienyu Chiu, E-Ling Lou, Bharat H. Patel | 2015-01-06 |
| 8392502 | System and method for effecting conference calling | Anne Yin-Fee Lee | 2013-03-05 |
| 8289885 | Third party charging for SIP sessions | Yigang Cai, Tienyu Chiu, E-Ling Lou, Bharat H. Patel | 2012-10-16 |
| 7586857 | Fast network SIP/SDP procedures for conference operations upon request from end user with optimization of network resources | Richard P. Ejzak, Chung-Zin Liu, Hong Xie | 2009-09-08 |
| 7570616 | Mobile cellular communication device presentation of user notification of active communication session handoff between radio technologies that are not directly compatible | — | 2009-08-04 |
| 7542556 | Apparatus and method for providing multiple line billing in telecommunications systems | Penny Lynne Bright | 2009-06-02 |
| 7013125 | Replenishment of prepaid accounts during multimedia sessions | Chinmei Chen Lee | 2006-03-14 |
| 6894715 | Mixing video signals for an audio and video multimedia conference call | — | 2005-05-17 |
| 6870916 | Targeted and intelligent multimedia conference establishment services | Chinmei Chen Lee, Stinson Mathai, Donna Michaels Sand | 2005-03-22 |
| 6850604 | Method and system for sending a data message to a calling phone while communicating with a first phone | Lynell Earline Cannell, Donna Michaels Sand | 2005-02-01 |
| 6819918 | IMSI conversion method | Terry D. Chin, Anita R. Garvert | 2004-11-16 |
| 6741678 | Method and system for sending a data response from a called phone to a calling phone | Lynell Earline Cannell, Donna Michaels Sand | 2004-05-25 |