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Nashua, NH, United States of America

Geophysical Survey Systems, Inc.

USPTO Granted Patents = 35

EPO Patents = 4

Trademarks = 17

Forward Citations = 602

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12 inventors (with patents filed for the assignee):

Roger Roberts (11 out of 11 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 (4 out of 5 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)

35 patents: Sort by Forward Citations

1. 12111391 - Positional accuracy using ground penetrating radar (2024-10-08),

2. 11835558 - Method for calculating dielectric versus air void content relationship for asphalt concrete using a single calibration measurement (2023-12-05),

3. 11536827 - Method for assessing the amount of rolling required to achieve optimal compaction of pre-rolled asphalt pavement (2022-12-27),

4. 11513146 - Method for calculating dielectric versus air void content relationship for asphalt concrete using a single calibration measurement (2022-11-29),

5. 11320558 - Apparatus for measuring wideband dielectric measurements of objects using a bistatic antenna (2022-05-03),

6. 10938099 - Surface dielectric measurement method and apparatus (2021-03-02),

7. 10494774 - Asphalt dielectric measurement accuracy improvement using asphalt surface temperature (2019-12-03),

8. 10222465 - Magnetic field detector and ground-penetrating radar device with merged display (2019-03-05),

9. 9739880 - Hand-held radar device with direct printing based on radar input (2017-08-22),

10. 9073347 - Hand-held radar device with direct printing based on radar input (2015-07-07),

11. 9057782 - Realization of time-domain ultra wideband ground-penetrating radar using high speed accumulation and interpolated sampling (2015-06-16),

12. 8957809 - Merged ground penetrating radar display for multiple antennas (2015-02-17),

13. D721287 - Ground penetrating radar device (2015-01-20),

14. 8115667 - Highway speed ground penetrating radar system utilizing air-launched antenna and method of use (2012-02-14),

15. 8102298 - Ultra-wideband radar waveform calibration for measurements of a heterogeneous material (2012-01-24),

GEOPHYSICAL SURVEY SYSTEMS, INC. (GSSI) is a leading manufacturer of ground penetrating radar (GPR) equipment. Founded in 1970, GSSI revolutionized the field of near-surface geophysics with the introduction of the first commercial GPR system. As a pioneer in the industry, GSSI continues to provide innovative solutions for a wide range of applications such as construction, archaeology, environmental assessment, and geologic exploration. With advanced technologies and a commitment to quality, GSSI remains at the forefront of non-destructive testing and subsurface imaging.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 23 2025

35 Patents

#8 in Nashua, NH

#66 in New Hampshire

#9,412 in US

#18,596 in the World

Nashua, NH, United States of America

Geophysical Survey Systems, Inc.

Forward Citations = 602

12 inventors:

Roger Roberts (11 out of 11 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 (4 out of 5 patents)

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