Issued Patents All Time
Showing 1–25 of 88 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE48176 | Method and apparatus for generating and distributing satellite tracking information in a compact format | Charles Abraham, James W. LaMance | 2020-08-25 |
| 10520606 | Method and system for determining time in a satellite positioning system | Charles Abraham, Sergei Podshivalov | 2019-12-31 |
| 9961618 | Apparatus and method for performing low-power geo-fence operations | Charles Abraham | 2018-05-01 |
| 9658338 | Apparatus and method to conserve power in a portable GNSS unit | Stephen Mole | 2017-05-23 |
| 9599720 | Method and apparatus for locating mobile receivers using a wide area reference network for propagating ephemeris | — | 2017-03-21 |
| 9562976 | Method and apparatus for distinguishing direct GNSS signals from reflections | Stephen Mole | 2017-02-07 |
| 9482739 | Indoor/outdoor transition determination | Stephen Mole, Yan Lu | 2016-11-01 |
| 9274225 | Method and apparatus for generating and distributing satellite tracking information | Charles Abraham, Matthew Riben | 2016-03-01 |
| 9252826 | Method and apparatus for reducing the time required to acquire a GPS signal | Charles Abraham | 2016-02-02 |
| 9179428 | Communications device with direct cellular-to-collocated device communication channel interface | Kamesh Medapalli, Robert G. Lorenz, Charles Abraham, Brima Ibrahim | 2015-11-03 |
| 9116233 | Power mode control for sensors | Roberto Ernesto Zanutta, Steven Malkos | 2015-08-25 |
| 9037154 | Method and apparatus for processing position information in a mobile device | Charles Abraham | 2015-05-19 |
| 8977288 | Apparatus and method for performing low-power geo-fence operations | Charles Abraham | 2015-03-10 |
| 8963773 | Method and apparatus for maintaining integrity of long-term orbits in a remote receiver | Matthew Riben | 2015-02-24 |
| 8934853 | Systems and methods for integrating cellular and location detection functionality using a single crystal oscillator | Robert G. Lorenz, Kamesh Medapalli, Charlie Abraham | 2015-01-13 |
| 8930137 | Method and apparatus for locating mobile receivers using a wide area reference network for propagating ephemeris | — | 2015-01-06 |
| 8902104 | Method and apparatus for combining measurements and determining clock offsets between different satellite positioning systems | — | 2014-12-02 |
| 8854259 | Method and system for maintaining a GNSS receiver in a hot-start state | Charles Abraham | 2014-10-07 |
| 8823587 | Method of keeping a GPS receiver in a state that enables rapid signal acquisition | Charlie Abraham | 2014-09-02 |
| 8692712 | Method and apparatus for processing of satellite signals without time of day information | Charles Abraham | 2014-04-08 |
| 8643541 | Method and apparatus for enhanced autonomous GPS | Sergei Podshivalov, Charles Abraham | 2014-02-04 |
| 8581779 | Method and apparatus for validating a position in a satellite positioning system using range-rate measurements | — | 2013-11-12 |
| 8571147 | Method and apparatus for reducing the time required to acquire a GPS signal | Charles Abraham | 2013-10-29 |
| 8514126 | Method and apparatus for monitoring the integrity of satellite tracking data used by a remote receiver | David Lundgren, Charles Abraham | 2013-08-20 |
| 8395543 | Method and apparatus for mitigating multipath effects at a satellite signal receiver using a sequential estimation filter | Charles Abraham, Sergei Podshivalov | 2013-03-12 |