Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6834196 | Method for improving the performance of USSD transfer in a cellular communications system | Sami Yliharjii | 2004-12-21 |
| 6721575 | Speech/USSD interoperability mechanism | Sami Yliharju | 2004-04-13 |