Issued Patents All Time
Showing 1–25 of 95 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12143528 | Packet data connectivity control with volume charged service limitation | Ralf Keller, Ivo Sedlacek | 2024-11-12 |
| 11917516 | Internet protocol multimedia subsystem emergency calls for roaming user equipments | Ralf Keller, Susana Fernandez Alonso, Ivo Sedlacek | 2024-02-27 |
| 11743705 | Internet protocol multimedia subsystem emergency calls for roaming user equipments | Ralf Keller, Susana Fernandez Alonso, Ivo Sedlacek | 2023-08-29 |
| 11178173 | Technique for handling accesses of user equipments | Venkata Ramesh Balabhadruni | 2021-11-16 |
| 11146939 | IMS emergency calls for roaming UEs | Ralf Keller, Susana Fernandez Alonso, Ivo Sedlacek | 2021-10-12 |
| 11032688 | IMS emergency calls for roaming UEs | Ralf Keller, Susana Fernandez Alonso, Ivo Sedlacek | 2021-06-08 |
| 10827392 | Handover delay optimization | Ralf Keller, Magnus Hallenstål, Magnus Olsson | 2020-11-03 |
| 10716033 | Session transfer in a communication network | Ralf Keller | 2020-07-14 |
| 10523720 | P-CSCF recovery and reregistration | Magnus Hallenstål | 2019-12-31 |
| 10326605 | Policy control in session initiation protocol forking | Ignacio Rivas Molina, Venkata Ramesh Balabhadruni, Patrik Dannebro, Rikard Eriksson, Susana Fernandez Alonso | 2019-06-18 |
| 10123085 | Synchronised social TV | Björn Norhammar | 2018-11-06 |
| 10021038 | Sharing resource reservation | Lars Lövsén, Rikard Eriksson, Maria Belen Pancorbo Marcos | 2018-07-10 |
| 10009747 | Emergency contact notification in IP multimedia subsystem (IMS) | Venkata Ramesh Balabhadruni | 2018-06-26 |
| 9924414 | Session transfer from a circuit switched network to a packet switched network | Ralf Keller, Peter Hedman | 2018-03-20 |
| 9900806 | Handling call transfer in a communication network | Ralf Keller | 2018-02-20 |
| 9900347 | Handling trust in an IP multimedia subsystem communication network | Peter Hedman, Monica Wifvesson | 2018-02-20 |
| 9888409 | Session transfer in a communication network | Ralf Keller | 2018-02-06 |
| 9882943 | Method of access provision | Bo Astrom, Alf Heidermark | 2018-01-30 |
| 9866672 | Method and apparatus for assisted emergency calls | Venkata Ramesh Balabhadruni | 2018-01-09 |
| 9867090 | Access transfer for a DRVCC mobile terminal | Magnus Hallenstål, Jan Holm | 2018-01-09 |
| 9854508 | Downloadable ISIM | Oscar Ohlsson, Luis Barriga | 2017-12-26 |
| 9813949 | Technique for terminating call set up in a CSFB situation | Ralf Keller, Karl-Peter Ranke | 2017-11-07 |
| 9749318 | Key management in a communication network | Rolf Blom, Mats Näslund, Karl Norrman | 2017-08-29 |
| 9717023 | Methods and devices for improving session continuity | Ralf Keller, Magnus Hallenstål, Magnus Olsson | 2017-07-25 |
| 9717043 | Regulation by MSC server when using SGs/Gs | Ralf Keller, Magnus Olsson, Jian Wang | 2017-07-25 |