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For the Inventor, By the Inventor

Hampshire, United Kingdom

Sondex Limited

Calculating rank
USPTO Granted Patents = 15

% Expired Patents = 33.3



Trademarks = 1

Forward Citations = 140

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21 inventors (with patents filed for the assignee):

goldMedal William Peter Stuart-Bruges (7 out of 8 patents)

silverMedal Victor Laing Allan (3 out of 3 patents)

bronzeMedal Thomas Lempriere Searight (3 out of 3 patents)

4.  Guy Harvey Mason (2 out of 6 patents)

5.  Rory McCrae Tulloch (2 out of 21 patents)

6.  Keith Robert Wootten (2 out of 7 patents)

7.  Michael Yuratich (1 out of 30 patents)

8.  Helene Claire Climent (1 out of 11 patents)

9.  John Pike (1 out of 1 patent)

10.  Alan Thomas Fraser (1 out of 5 patents)

11.  Roger Farries Findlay (1 out of 1 patent)

12.  Allan Grant Clark (1 out of 1 patent)

13.  James Garland Gibson (1 out of 1 patent)

14.  Damien Despax (1 out of 2 patents)

15.  Neil G Harris (1 out of 1 patent)


15 patents:

1. 9312798 - Sensor commuated electric motor with sensorless angular position determination and method (2016-04-12),
2. 8693284 - Apparatus for creating pressure pulses in the fluid of a bore hole (2014-04-08),
3. 8375801 - Sensitive differential pressure sensor and method (2013-02-19),
4. 8242436 - Neutron porosity logging tool using microstructured neutron detectors (2012-08-14),
5. 8218133 - Refractive index tool and method (2012-07-10),
6. 8011448 - Rotary steerable tool (2011-09-06),
7. 7954561 - Vertical direction adjustment tool for downhole drilling apparatus (2011-06-07),
8. 7591307 - Method of and system for determining the free point in a drill pipe (2009-09-22),
9. 7257491 - Method of determining the per strata reserve quality of an oil well (2007-08-14),
10. 7090007 - Centralizer for wireline tools (2006-08-15),
11. 7044219 - Shock absorber (2006-05-16),
12. 6917303 - Logging sondes for use in boreholes (2005-07-12),
13. 6868901 - Tubular cutting tool (2005-03-22),
14. 6842697 - Method for downhole logging (2005-01-11),
15. 6457357 - Fluid density measurement device (2002-10-01),
Company Overview
Sondex Limited, based in Hampshire, specializes in the design and manufacture of advanced measurement and monitoring equipment for the oil and gas industry. The company focuses on providing innovative solutions that enhance operational efficiency and safety in various applications, including flow measurement and subsea technologies. With a commitment to research and development, Sondex aims to deliver high-quality products that meet the evolving needs of its global clientele in the energy sector.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

15 Patents

#14 in Hampshire

#1,184 in United Kingdom

#39,991 in the World

Hampshire, GB
Hampshire, United Kingdom

Sondex Limited

Forward Citations = 140

21 inventors:

goldMedal William Peter Stuart-Bruges (7 out of 8 patents)

silverMedal Victor Laing Allan (3 out of 3 patents)

bronzeMedal Thomas Lempriere Searight (3 out of 3 patents)

4.  Guy Harvey Mason (2 out of 6 patents)

5.  Rory McCrae Tulloch (2 out of 21 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Sondex Limited. Retrieved from https://idiyas.com/company/sondex

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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