Issued Patents All Time
Showing 126–132 of 132 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6799059 | System and method for improving downlink signal quality in mobile telephone communications systems | Michael Heubel | 2004-09-28 |
| 6751468 | Systems and methods for providing push to talk feature for wireless communication systems | Michael Heubel | 2004-06-15 |
| 6608827 | Method for increasing the communication capacity of a cellular telephone system | — | 2003-08-19 |
| 6393270 | Network authentication method for over the air activation | Stephen Thomas Hardin | 2002-05-21 |
| 6266532 | Method and apparatus for determining the optimal number of analog and digital radios in a dual-mode wireless network | — | 2001-07-24 |
| 6259908 | Method of limiting access to the data stored in a cellular telephone | — | 2001-07-10 |
| 6236855 | Method for voice quality improvement in a wireless transmission system | — | 2001-05-22 |