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Nashua, NH, United States of America

Geophysical Survey Systems, Inc.

USPTO Granted Patents = 38

% Expired Patents = 7.9

EPO Patents = 4

Trademarks = 15

Forward Citations = 608

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15 inventors (with patents filed for the assignee):

Roger Roberts (12 out of 12 patents)

Henning F Harmuth (8 out of 8 patents)

Jeffrey Ross Feigin (7 out of 8 patents)

4. Alan E Schutz (6 out of 6 patents)

5. David B Cist (5 out of 6 patents)

6. Dennis J Johnson (2 out of 5 patents)

7. Henning F Harmuth (2 out of 2 patents)

8. Evgueni F Bogatyrev (1 out of 1 patent)

9. Henny F Harmuth (1 out of 1 patent)

10. Roger Arthur Dugas (1 out of 1 patent)

11. Leonid Galinovsky (1 out of 1 patent)

12. Kenneth Corcoran (1 out of 1 patent)

13. Kazunori Takahashi (1 out of 1 patent)

14. Christopher Green (1 out of 1 patent)

15. Rafiou Oketokoun (1 out of 1 patent)

Core Competencies:

Stepped Frequency Continuous Wave

Ground Penetrating Radar

Electromagnetic Wave Reflection

Dielectric Measurements

Asphalt Concrete

Ultra-Wideband Radar

Data Capture Technology

Concrete Structure Assessment

Highway Speed Systems

Merged Radar Displays

Impulse Radar Security

Antenna Calibration

38 patents: Sort by Forward Citations

1. 12716992 - System and method for generating transmitted signals of a Stepped Frequency Continuous Wave radar (2026-08-25),

2. 12681168 - Method of generating a map based on ground penetrating radar scans (2026-07-14),

3. 12618883 - Methods for calculating a relative change in percent voids using electromagnetic wave reflection coefficients (2026-05-05),

4. 12111391 - Positional accuracy using ground penetrating radar (2024-10-08),

5. 11835558 - Method for calculating dielectric versus air void content relationship for asphalt concrete using a single calibration measurement (2023-12-05),

6. 11536827 - Method for assessing the amount of rolling required to achieve optimal compaction of pre-rolled asphalt pavement (2022-12-27),

7. 11513146 - Method for calculating dielectric versus air void content relationship for asphalt concrete using a single calibration measurement (2022-11-29),

8. 11320558 - Apparatus for measuring wideband dielectric measurements of objects using a bistatic antenna (2022-05-03),

9. 10938099 - Surface dielectric measurement method and apparatus (2021-03-02),

10. 10494774 - Asphalt dielectric measurement accuracy improvement using asphalt surface temperature (2019-12-03),

11. 10222465 - Magnetic field detector and ground-penetrating radar device with merged display (2019-03-05),

12. 9739880 - Hand-held radar device with direct printing based on radar input (2017-08-22),

13. 9073347 - Hand-held radar device with direct printing based on radar input (2015-07-07),

14. 9057782 - Realization of time-domain ultra wideband ground-penetrating radar using high speed accumulation and interpolated sampling (2015-06-16),

15. 8957809 - Merged ground penetrating radar display for multiple antennas (2015-02-17),

Company Overview

Geophysical Survey Systems, Inc. (GSSI) is a leader in the development and manufacturing of ground penetrating radar (GPR) systems. Based in Nashua, NH, the company specializes in advanced geophysical technologies that are utilized across various sectors, including construction, environmental assessment, and archaeology. GSSI's innovative solutions enable professionals to visualize subsurface conditions, enhancing decision-making processes in fields such as civil engineering and utility detection.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

38 Patents

#8 in Nashua, NH

#65 in New Hampshire

#9,020 in US

#17,831 in the World

Nashua, NH, United States of America

Geophysical Survey Systems, Inc.

Forward Citations = 608

15 inventors:

Roger Roberts (12 out of 12 patents)

Henning F Harmuth (8 out of 8 patents)

Jeffrey Ross Feigin (7 out of 8 patents)

4. Alan E Schutz (6 out of 6 patents)

5. David B Cist (5 out of 6 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Geophysical Survey Systems, Inc.. Retrieved from https://idiyas.com/company/geophysical-survey-systems

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

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