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For the Inventor, By the Inventor

Aberdeen, United Kingdom

Specialised Petroleum Services Group Limited


USPTO Granted Patents = 41



Trademarks = 1

Forward Citations = 591

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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 20 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:
Downhole Tool
Wellbore Cleaning
Fluid Flow Control
Cement Evaluation
Pressure Controlled Operations
Junk Removal Tool
Valve Seat Assembly
Dual Function Cleaning Tool
Wellhead Seal Unit
Agitated Cleaning Tool
Disengageable Downhole Tool
Hydraulic Damping

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),
Specialised Petroleum Services Group Limited is a leading provider of specialized services to the oil and gas industry. With expertise in oilfield equipment, inspection, maintenance, and training services, our company offers comprehensive solutions for enhanced efficiency and safety in the petroleum sector. With a focus on quality and customer satisfaction, we have established ourselves as a trusted partner for major oil companies worldwide.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 30 2025

41 Patents

#6 in Aberdeen

#421 in United Kingdom

#16,214 in the World

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Aberdeen, United Kingdom

Specialised Petroleum Services Group Limited

Forward Citations = 591

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 20 patents)

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