Issued Patents All Time
Showing 26–50 of 88 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8358245 | Method and system for extending the usability period of long term orbit (LTO) | — | 2013-01-22 |
| 8310393 | Method and system for maintaining a GNSS receiver in a hot-start state | Charles Abraham | 2012-11-13 |
| 8301370 | Method and apparatus for generating and using a regional-terrain model | — | 2012-10-30 |
| 8301376 | Method and apparatus for locating position of a GPS device | Donald L. Fuchs, Charles Abraham | 2012-10-30 |
| 8248299 | Method and apparatus for combining measurements and determining clock offsets between different satellite positioning systems | — | 2012-08-21 |
| 8212719 | Method and apparatus for background decoding of a satellite navigation message to maintain integrity of long term orbit information in a remote receiver | Matthew Riben | 2012-07-03 |
| 8134500 | Method and apparatus for enhanced autonomous GPS | Sergei Podshivalov, Charles Abraham | 2012-03-13 |
| 8090536 | Method and apparatus for compression of long term orbit data | Matt Riben, Sergei Podshivalov, Charles Abraham, Javier De Salas | 2012-01-03 |
| 8054222 | Method and apparatus for combining measurements and determining clock offsets between different global navigation satellite systems | Javier De Salas | 2011-11-08 |
| 8032301 | Computing long term orbit and clock models with variable time-horizons | Matthew Riben | 2011-10-04 |
| 8009092 | Method and apparatus for processing satellite signals at a satellite positioning system receiver | Charles Abraham | 2011-08-30 |
| 7987048 | Method and apparatus for computing position using instantaneous doppler measurements from satellites | — | 2011-07-26 |
| 7948434 | Method and system for maintaining a GNSS receiver in a hot-start state | Charles Abraham | 2011-05-24 |
| 7944394 | Method and apparatus for validating a position in a satellite positioning system using range-rate measurements | — | 2011-05-17 |
| 7940214 | Method and apparatus for determining absolute time-of-day in a mobile-assisted satellite positioning system | Charles Abraham | 2011-05-10 |
| 7924947 | Method and apparatus for decoding satellite navigation data from a satellite positioning system | Emre Tapucu, Charles Abraham | 2011-04-12 |
| 7739032 | Method and apparatus for generating and using a regional-terrain model | — | 2010-06-15 |
| 7701389 | Method and apparatus for determining absolute time-of-day in a mobile-assisted satellite positioning system | Charles Abraham | 2010-04-20 |
| 7693660 | Computing long term orbit and clock models with variable time-horizons | Matthew Riben | 2010-04-06 |
| 7672404 | Method and apparatus for reducing the time required to acquire a GPS signal | Charles Abraham | 2010-03-02 |
| 7642959 | Method and apparatus for processing satellite signals at a satellite positioning system receiver | Charles Abraham | 2010-01-05 |
| 7595752 | Method and apparatus for enhanced autonomous GPS | Sergei Podshivalov, Charles Abraham | 2009-09-29 |
| 7592950 | Method and apparatus for combining measurements and determining clock offsets between different satellite positioning systems | — | 2009-09-22 |
| 7589667 | Method and apparatus for monitoring the integrity of satellite tracking data used by a remote receiver | David Lundgren, Charles Abraham | 2009-09-15 |
| 7554487 | Method and system for determining time in a satellite positioning system | Charles Abraham, Sergi Podshivalov | 2009-06-30 |