Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10855585 | Session initiation protocol stack optimisation | Frederik Hugo Zwaal | 2020-12-01 |
| 10075372 | Session initiation protocol stack optimisation | Frederik Hugo Zwaal | 2018-09-11 |
| 8838705 | Session initiation protocol stack optimisation | Frederik Hugo Zwaal | 2014-09-16 |
| 8661074 | Adaptive choice for context source request | Jozef Henricus Petrus Hendriks, Hugo Zwaal, Mieke Verheijen | 2014-02-25 |
| 8320936 | Positioning in a mobile communications system | — | 2012-11-27 |
| 8190175 | Closest user terminal search method for a telecommunication network and service node applying such a method | Jozef Henricus Petrus Hendriks, Hugo Zwaal | 2012-05-29 |
| 8036684 | Closest user terminal search method for a telecommunication network and service node applying such a method | Jozef Henricus Petrus Hendriks, Hugo Zwaal | 2011-10-11 |