Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9648053 | On-demand registration for internet protocol multimedia subsystem (IMS) services | Priscilla Lau, Ye Huang, Wing-Cheong V. Yeung | 2017-05-09 |
| 9450983 | Controlling access to an operator network by non-conforming devices | Ye Huang, Yee Sin Chan | 2016-09-20 |
| 9325856 | Voice quality data piggybacking on SIP signaling messages | Priscilla Lau | 2016-04-26 |
| 9251315 | Security key management based on service packaging | William C. King, Bjorn Hjelm, Kent McCullough | 2016-02-02 |
| 9237431 | Method and apparatus for extended emergency service | Xiaomei Wang | 2016-01-12 |
| 8984067 | Session initiation protocol (SIP) signaling to keep a voice over internet protocol (VoIP) session active during a call hold | Priscilla Lau | 2015-03-17 |
| 8805424 | SMS over wireless packet data network | William C. King, Priscilla Lau, Kwai Yeung Lee | 2014-08-12 |
| 8761817 | Short messaging service delivery architecture in hybrid LTE/CDMA/GSM networks | Xuming Chen, Kwai Yeung Lee | 2014-06-24 |
| 7774008 | MDN-less SMS messaging (network solution) for wireless M2M application | Abdelkader Benaouda, Priscilla Lau, Kwai Yeung Lee, Xiaomei Wang | 2010-08-10 |
| 6427929 | Pressurized cleaning of developer dispenser nozzles | Niem D. Nguyen | 2002-08-06 |
| 6098640 | Pressurized cleaning of developer dispenser nozzles | Niem D. Nguyen | 2000-08-08 |