Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6345181 | Charging criteria for a call in a cellular mobile network | Risto Janhonen, Markku Tuohino | 2002-02-05 |
| 6115600 | Method for improving charging criteria in a mobile telephone network | Markku Tuohino, Risto Janhonen | 2000-09-05 |
| 6044264 | Method for activating intelligent network services in a mobile communication system, and a mobile communication system | Seppo Huotari | 2000-03-28 |