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For the Inventor, By the Inventor

Aberdeen, United Kingdom

Specialised Petroleum Services Group Limited

USPTO Granted Patents = 41

% Expired Patents = 31.7



Forward Citations = 598

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9 inventors (with patents filed for the assignee):

goldMedal George Telfer (32 out of 63 patents)

silverMedal Paul David Howlett (11 out of 37 patents)

bronzeMedal James Edward Atkins (4 out of 15 patents)

4.  Edward Docherty Scott (4 out of 11 patents)

5.  James Linklater (1 out of 21 patents)

6.  Ian James Lilley (1 out of 1 patent)

7.  Glynn Williams (1 out of 1 patent)

8.  Rae Andrew Youngor (1 out of 1 patent)

9.  Mark Carmichael (1 out of 1 patent)


Core Competencies:
Valve Seat Assembly
Downhole Tool
Wellbore Cleaning
Flow Control Tool
Cement Evaluation
Pressure Control
Cleaning Method
Packer
Debris Retrieval
Circulating Tool
Hydraulic Damping
Stabiliser

41 patents:

1. 9745828 - Valve seat assembly, downhole tool and methods (2017-08-29),
2. 9410570 - Clamp (2016-08-09),
3. 9022130 - Downhole valve tool and method of use (2015-05-05),
4. 8955584 - Drill string mounted rotatable tool and cleaning method (2015-02-17),
5. 8869884 - Diverter cup assembly (2014-10-28),
6. 8844622 - Wellbore cleaning method and apparatus (2014-09-30),
7. 8689877 - Downhole tool (2014-04-08),
8. 8672035 - Downhole tool of high pressure operating cycle capability (2014-03-18),
9. 8388256 - Clamp (2013-03-05),
10. 8356670 - Ball seat assembly and method of controlling fluid flow through a hollow body (2013-01-22),
11. 8307902 - Downhole flow control tool and method (2012-11-13),
12. 8157008 - Cement evaluation method and tool (2012-04-17),
13. 8113285 - Agitated wellbore cleaning tool and method (2012-02-14),
14. 7992636 - Device and method for retrieving debris from a well (2011-08-09),
15. 7870897 - Dual function cleaning tool (2011-01-18),
Company Overview
Specialised Petroleum Services Group Limited, based in Aberdeen, specializes in advanced technologies for the oil and gas industry. The company focuses on the development and manufacturing of innovative downhole tools and equipment, enhancing wellbore cleaning, fluid flow control, and cement evaluation processes. Their expertise extends to pressure-controlled operations and junk removal tools, providing essential solutions for efficient and safe drilling operations. With a commitment to quality and performance, they serve a critical role in optimizing resource extraction and operational efficiency.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

41 Patents

#5 in Aberdeen

#433 in United Kingdom

#16,725 in the World

Aberdeen, GB
Aberdeen, United Kingdom

Specialised Petroleum Services Group Limited

Forward Citations = 598

9 inventors:

goldMedal George Telfer (32 out of 63 patents)

silverMedal Paul David Howlett (11 out of 37 patents)

bronzeMedal James Edward Atkins (4 out of 15 patents)

4.  Edward Docherty Scott (4 out of 11 patents)

5.  James Linklater (1 out of 21 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Specialised Petroleum Services Group Limited. Retrieved from https://idiyas.com/company/specialised-petroleum-services-group

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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