Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7437144 | Method of managing prepaid subscription information | Lars Andresen, Lone B. Fjordstrom, Nikolaj Sloth, Pirjo Haakana | 2008-10-14 |
| 6741686 | Controlling setup or continuation of a call charged from a pre-paid group account | Pirjo Haakana | 2004-05-25 |