Issued Patents All Time
Showing 51–72 of 72 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8315190 | Method and apparatus for interworking between push-to-talk over cellular (PoC) systems and instant messaging (IM) systems | Ramachandran Subramanian | 2012-11-20 |
| 8031645 | Archival of session data exchanged with a wireless communication network | Ramachandran Subramanian | 2011-10-04 |
| 8010143 | Method and apparatus for implicit floor control in push-to-talk over cellular systems | Ramachandran Subramanian | 2011-08-30 |
| 7443826 | Method and apparatus for automatic frequency control in a CDMA receiver | Gregory E. Bottomley, Paul W. Dent | 2008-10-28 |
| 7382821 | Method and apparatus for configuring a RAKE receiver | Torsten Carlsson, Håkan Eriksson, Kjell Gustafsson, Torgny Palenius, Christer Östberg | 2008-06-03 |
| 7184462 | Method and apparatus for configuring a rake receiver | Torsten Carlsson, H{dot over (a)}kan B. Eriksson, Kjell Gustafsson, Torgny Palenius, Christer Östberg | 2007-02-27 |
| 7133353 | CDMA system using quasi-orthogonal codes | Essam Sourour, Ali S. Khayrallah | 2006-11-07 |
| 7065130 | Searching for signals in a communications system | Håkan Eriksson, Torgny Palenius, Christer Östberg, Torsten Carlsson, Kjell Gustafsson | 2006-06-20 |
| 6920324 | Methods, receivers, transmitters, and systems for performing a soft hand-over of a mobile terminal between base stations that communicate using different communication channels | Murali Narasimha, Wail Refai, Stuart B. Sanders | 2005-07-19 |
| 6873648 | Method and apparatus for fast detection of locations of path rays in a receiver having multiple time references | Erik Dahlback | 2005-03-29 |
| 6768727 | Fast forward link power control for CDMA system | Essam Sourour, Ali S. Khayrallah | 2004-07-27 |
| 6757527 | Method and apparatus for synchronizing a local reference frequency in a communication systems | Erik Dahlback | 2004-06-29 |
| 6606363 | Method and apparatus for estimating a frequency offset by combining pilot symbols and data symbols | Rajaram Ramesh | 2003-08-12 |
| 6526035 | Method and apparatus for identifying the source of a digital signal | Christer Östberg, Håkan Eriksson, Häkan Henningsson | 2003-02-25 |
| 6449321 | Radio receiver | Kjell Gustafsson | 2002-09-10 |
| 6373882 | Motion estimator for a CDMA mobile station | Torsten Carlsson, Håkan Eriksson, Kjell Gustafsson, Torgny Palenius, Christer Östberg | 2002-04-16 |
| 6356608 | Method, apparatus, and system for determining a location of a frequency synchronization signal | — | 2002-03-12 |
| 6278699 | Synchronization techniques and systems for spread spectrum radiocommunication | — | 2001-08-21 |
| 6226336 | Method and apparatus for detecting a frequency synchronization signal | Berthold Gustafsson Kjell | 2001-05-01 |
| 6104767 | Method and apparatus for estimating a frequency offset | Georg Frank | 2000-08-15 |
| 5564428 | Method and apparatus for enhancing the signal-to-noise ratio of ECG signals | Leif Soernmo, Thomas Ohlsson | 1996-10-15 |
| 5479933 | Method and apparatus for processing ECG signals | Thomas Ohlsson, Leif Soernmo | 1996-01-02 |