Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7761716 | Method and arrangement for securing a man-machine dialogue | Ulrich Sporn | 2010-07-20 |
| 7634445 | Method for billing internet transactions via mobile radio telephone service | Michael Langer, Patrik Ljungström, Michel Uwe, Johann Reindl, Leonhard Schmickler +1 more | 2009-12-15 |
| 7379736 | Method and device for selectively controlling network selection in an area covered by at least two mobile communication networks | Andreas Hochscherff, Patrik Ljungström, Georg Sanger | 2008-05-27 |
| 7248886 | Public mobile communication system compatible wireless communication system | Patrik Ljungstroem, Frieder Pernice | 2007-07-24 |
| 7203836 | Method and device for the mutual authentication of components in a network using the challenge-response method | Gunter Maringer, Frieder Pernice | 2007-04-10 |
| 6993320 | Method and device for accessing a telecommunications network and for billing telecommunication services | Peter Brune, Ulrike Feuser, Michael Langer, Patrik Ljungström, Uwe Michel +1 more | 2006-01-31 |
| 6741852 | Method and device to authenticate subscribers in a mobile radiotelephone systems | — | 2004-05-25 |