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For the Inventor, By the Inventor

Bristol, United Kingdom

Radiodetection Limited


USPTO Granted Patents = 71

% Expired Patents = 9.9



Trademarks = 40

Forward Citations = 2,151

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53 inventors (with patents filed for the assignee):

goldMedal Richard D Pearson (18 out of 22 patents)

silverMedal John Mark Royle (12 out of 17 patents)

bronzeMedal Richard William Fling (12 out of 12 patents)

4.  Andrew Biggerstaff Lewis (7 out of 34 patents)

5.  Donald L Hore (6 out of 14 patents)

6.  David William Flatt (4 out of 4 patents)

7.  Jeff Thompson (3 out of 4 patents)

8.  Luigi Lanfranchi (3 out of 3 patents)

9.  Denise Louise Harris (3 out of 3 patents)

10.  Stephen John Petherick (2 out of 8 patents)

11.  Stuart Russell (2 out of 24 patents)

12.  Jeffrey Richard Thompson (2 out of 2 patents)

13.  Stephen Maslen (2 out of 2 patents)

14.  James Ian King (2 out of 3 patents)

15.  Jeffrey M Pollard (2 out of 2 patents)


Core Competencies:
Cable Detection
Electromagnetic Field
Current Tracing
Buried Conductor
Sonde Locator
Pipeline Mapping
Inductive Sensors
Fibre Optic Cables
Leak Detection
Depth Calculation
Fault Detection
Geographical Positional Data

71 patents:

1. 11061061 - System and apparatus for detecting faults in an insulation layer of a buried conductor (2021-07-13),
2. 9194978 - Electronic marker locator systems and methods (2015-11-24),
3. 8952677 - Locator for locating a current carrying conductor (2015-02-10),
4. 8742747 - Detector for detecting a current carrying conductor (2014-06-03),
5. 8676522 - Detector for detecting a current carrying conductor (2014-03-18),
6. 8566043 - Detector for calculating the distortion of an electromagnetic field produced by a buried current carrying conductor (2013-10-22),
7. 8183851 - Detector for calculating a depth of a buried conductor (2012-05-22),
8. 8125210 - Detector for calculating the depth of a buried conductor (2012-02-28),
9. 8115489 - Detector for detecting a current carrying conductor and a method of validating operation of the detector (2012-02-14),
10. D648742 - Transmitter (2011-11-15),
11. 8058874 - System for and method of detecting a buried conductor (2011-11-15),
12. 7994770 - Transmitter of a system for detecting a buried conductor (2011-08-09),
13. 7977950 - Time-domain reflectometer (2011-07-12),
14. 7969137 - System for and method of detecting a buried conductor (2011-06-28),
15. 7940056 - Time-domain reflectometry (2011-05-10),
Radiodetection Limited, based in Bristol, UK, specializes in advanced technologies for underground object detection. The company develops innovative solutions for cable detection, pipeline mapping, and current tracing, utilizing electromagnetic fields and inductive sensors to enhance safety and efficiency in excavation and construction projects. Their expertise extends to locating buried conductors and fibre optic cables, providing essential tools for professionals in various industries to mitigate risks associated with underground utilities.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

Radiodetection Limited
71 Patents

#8 in Bristol

#263 in United Kingdom

#10,492 in the World

Bristol, GB
Bristol, United Kingdom

Radiodetection Limited

Forward Citations = 2,151

53 inventors:

goldMedal Richard D Pearson (18 out of 22 patents)

silverMedal John Mark Royle (12 out of 17 patents)

bronzeMedal Richard William Fling (12 out of 12 patents)

4.  Andrew Biggerstaff Lewis (7 out of 34 patents)

5.  Donald L Hore (6 out of 14 patents)

Please report any incorrect information to [email protected]
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