Issued Patents All Time
Showing 26–50 of 96 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6510515 | Broadcast service access control | — | 2003-01-21 |
| 6498936 | Methods and systems for coding of broadcast messages | — | 2002-12-24 |
| 6496489 | Method and apparatus for distinguishing between a digital control channel and a digital traffic channel in a radiocommunication system | Francois Sawyer, Ray Henry | 2002-12-17 |
| 6493550 | System proximity detection by mobile stations | — | 2002-12-10 |
| 6493547 | Apparatus and methods for providing usage information in wireless communications systems | — | 2002-12-10 |
| 6477362 | Systems and methods for providing information to emergency service centers | Gregory E. Bottomley, James Ragsdale | 2002-11-05 |
| 6466568 | Multi-rate radiocommunication systems and terminals | James Ragsdale, John Walter Diachina | 2002-10-15 |
| RE37787 | Handover method for mobile radio system | Jan E. Uddenfeldt | 2002-07-09 |
| RE37754 | Cellular digital mobile radio system and method of transmitting information in a digital cellular mobile radio system | Jan E. Uddenfeldt | 2002-06-18 |
| 6385461 | User group indication and status change in radiocommunications systems | — | 2002-05-07 |
| RE37685 | Handover method for mobile radio system | Jan E. Uddenfeldt | 2002-04-30 |
| 6374098 | Systems and methods for locating remote units operating in a radiocommunication system using an adjunct system | R. David Koilpillai, Gregory E. Bottomley, Havish Koorapaty, Rajaram Ramesh | 2002-04-16 |
| 6331971 | Enhanced sleep mode in radiocommunication systems | — | 2001-12-18 |
| 6266534 | Systems and methods for locating remote terminals in radiocommunication systems | Rajaram Ramesh, Karl Molnar, R. David Koilpillai, Havish Koorapaty | 2001-07-24 |
| 6259915 | Multiple hyperband mobile and base stations | — | 2001-07-10 |
| 6252868 | Digital control channels having logical channels supporting broadcast SMS | John Walter Diachina, Bengt Persson, Anthony J. Sammarco | 2001-06-26 |
| 6243588 | Mobile positioning method for a portable communications device using shortened repetitive bursts | Havish Koorapaty, Patrick Nils Lundqvist | 2001-06-05 |
| 6212176 | Digital control channels having logical channels for multiple access radiocommunication | Håkan Andersson, John Walter Diachina, Bengt Persson, Anthony J. Sammarco, Francois Sawyer | 2001-04-03 |
| 6115596 | Systems and methods for handling emergency calls in hierarchical cell structures | Rajaram Ramesh, R. David Koilpillai | 2000-09-05 |
| 6091960 | Method for paging mobile stations | John Walter Diachina | 2000-07-18 |
| 6081514 | Method and apparatus for enhanced functions using a reserved field | — | 2000-06-27 |
| 6073005 | Systems and methods for identifying emergency calls in radiocommunication systems | Gregory E. Bottomley, John Walter Diachina | 2000-06-06 |
| 6058108 | Method and apparatus for locating a digital control channel in a radiocommunication system | Francois Sawyer, Ray Henry | 2000-05-02 |
| 6044270 | Apparatuses and methods for signal strength measurement in a wireless communication system | — | 2000-03-28 |
| 6041047 | Digital control channels having logical channels supporting broadcast SMS | John Walter Diachina, Bengt Persson, Anthony J. Sammarco | 2000-03-21 |