Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7319855 | Method for charging internet services via a mobile telephone | Patrik Ljungström, Uwe Michel, Jörg Rass, Leonhard Schmickler | 2008-01-15 |
| 7072646 | Method of distributing keys to subscribers of communications networks | Andreas Sasse | 2006-07-04 |
| 6993320 | Method and device for accessing a telecommunications network and for billing telecommunication services | Ulrike Feuser, Michael Langer, Patrik Ljungström, Uwe Michel, Walter Mohrs +1 more | 2006-01-31 |
| 6289580 | Surface mount power supply device | — | 2001-09-18 |
| 5920461 | Surface mount power supply device | — | 1999-07-06 |