Hemisphere GPS Patents

Below is a list of patents which have been awarded to Hemisphere GPS by the relevant Patent Office. To view the patent documents, please click on the patent number.

Patent Number	Title	Grant Date	Country Issued
8334804	Multi-Frequency GNSS Receiver Baseband DSP	December 18, 2012	U.S.
8307535	Multi-Frequency Antenna Manufacturing Method	November 13, 2012	U.S.
8271194	Method and System Using GNSS Phase Measurements for Relative Positioning	September 18, 2012	U.S.
8265826	Combined GNSS Gyroscope Control System and Method	September 11, 2012	U.S.
8217833	GNSS Superband ASIC with Simultaneous Multi-Frequency Down Conversion	July 10, 2012	U.S.
8184050	Antenna Alignment and Monitoring System and Method Using GNSS	May 22, 2012	U.S.
8174437	System and Method for Augmenting DGNSS with Internally-Generated Differential Correction	May 8, 2012	U.S.
8138970	GNSS-Based Tracking of Fixed or Slow-Moving Structures	March 20, 2012	U.S.
8140223	Multiple-Antenna GNSS Control System and Method	March 20, 2012	U.S.
8102325	GNSS Antenna with Selectable Gain Pattern, Method of Receiving GNSS Signals and Antenna Manufacturing Method	January 24, 2012	U.S.
8085196	Removing Biases in Dual Frequency GNSS Receivers Using SBAS	December 27, 2011	U.S.
8000381	Unbiased Code Phase Discriminator	August 16, 2011	U.S.
7948769	Tightly Coupled PCB GNSS Circuit and Manufacturing Method	May 24, 2011	U.S.
7808428	GNSS Receiver and External Storage Device System and GNSS Data	October 5, 2010	U.S.
7429952	Broadband Aperture Coupled GNN Microstrip Patch Antenna	September 30, 2008	U.S.
7400294	Portable Reference Station for Local Differential GPS Corrections	July 15, 2008	U.S.
7388539	Carrier Track Loop for GNSS Derived Attitude	June 17, 2008	U.S.
7292186	Method and System for Synchronizing Multiple Tracking Devices for a Geo-Location System	November 6, 2007	U.S.
7292185	Attitude Determination Exploiting Geometry Constraints	November 6, 2007	U.S.
6744404	Unbiased Code Phase Estimator for Mitigating Multipath in GPS	June 1, 2004	U.S.
6549091	Antenna Coupler	April 15, 2003	U.S.
6501346	Ceramic Filter for Use with a Beacon Receiver	December 31, 2002	U.S.
6469663	Method and System for GPS and WAAS Carrier Phase Measurements for Relative Positioning	October 22, 2002	U.S.
6397147	Relative GPS Positioning Using a Single GPS Receiver with Internally Generated Differential Correction Terms	May 28, 2002	U.S.
6111549	Flexible Circuit Antenna and Method Manufacture Thereof	August 29, 2000	U.S.