Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11888721 | Network monitoring | Alexander G. Langer | 2024-01-30 |
| 9781762 | Technique for connection attempt handling in a circuit switched fallback situation | Ralf Keller, Karl-Peter Ranke | 2017-10-03 |
| 9369942 | Call control entity for a communication network | Andreas Witzel | 2016-06-14 |
| 9184978 | Operating and supporting dual mode user equipment | Ralf Keller, Andreas Witzel, Martin Stumpert | 2015-11-10 |
| 9161268 | Technique for connection attempt handling in a circuit switched fallback situation | Ralf Keller, Karl-Peter Ranke | 2015-10-13 |
| 9148451 | Providing circuit switched calls and services over a broadband network | Ola Melander | 2015-09-29 |
| 8989151 | Short messaging service over 3GPP long term evolution | Ralf Keller, Andreas Witzel | 2015-03-24 |
| 8768348 | Method and device for providing a mobile station with network identity and timezone (NTZ) information | Martin Stuempert | 2014-07-01 |
| 8738799 | Framing format selection in a communications network with a user plane | Martin Stumpert | 2014-05-27 |
| 8649777 | Presence service time zone information | Andreas Witzel | 2014-02-11 |
| 8406380 | Test phone using SIP | Ola Melander | 2013-03-26 |
| 8340713 | Method and devices for supporting message services to a dual mode mobile station via a session initiation protocol | Andreas Witzel, Martin Stumpert, Ralf Keller | 2012-12-25 |
| 7764623 | Automatic quality of service class management | Martin Stumpert | 2010-07-27 |