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For the Inventor, By the Inventor

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Wellstream International Limited

Calculating rank
USPTO Granted Patents = 30

% Expired Patents = 50.0


Forward Citations = 274

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29 inventors (with patents filed for the assignee):

goldMedal Zhimin Tan (7 out of 22 patents)

silverMedal Dana Fraser (6 out of 8 patents)

bronzeMedal George Karabelas (4 out of 13 patents)

4.  Tony Eccleston (4 out of 6 patents)

5.  Helio Marins David Filho (3 out of 3 patents)

6.  Marcio Henriques Albuquerque (3 out of 3 patents)

7.  Terence Henry Sheldrake (2 out of 7 patents)

8.  Yanqiu Zhang (2 out of 10 patents)

9.  Richard Alasdair Clements (2 out of 13 patents)

10.  Mark D Kalman (2 out of 23 patents)

11.  John Robert Belcher (2 out of 5 patents)

12.  Yucheng Hou (1 out of 8 patents)

13.  Ole A Grytå (1 out of 2 patents)

14.  Tricia Hill (1 out of 1 patent)

15.  Laurence James Baldwin (1 out of 1 patent)


Core Competencies:
Riser Assembly
Flexible Pipe
Pressure Armour Layer
Thermal Insulation
Corrosion Protection
End Fitting
Composite Pipe
Fluid Turbulence
Heat Dissipation
Manufacturing Method
Collapse Tolerant
Temperature Control

30 patents:

1. 9359829 - Riser assembly and method of providing riser assembly (2016-06-07),
2. 8857521 - Venting gas (2014-10-14),
3. 8702350 - Riser assembly (2014-04-22),
4. 8689423 - Reducing fluid turbulance in a flexible pipe (2014-04-08),
5. 8597451 - Method and assembly for the production of a homogenous composite pipe of unspecified length (2013-12-03),
6. 8459306 - Flexible pipe having pressure armour layer (2013-06-11),
7. 8322382 - Composite pipe having non-bonded internal liner, method and assembly for the production thereof (2012-12-04),
8. 8220129 - Method for securing an end fitting to a flexible pipe body (2012-07-17),
9. 8210775 - Apparatus and method for controlling motion of a bend stiffener (2012-07-03),
10. 8210212 - Thermal insulation of flexible pipes (2012-07-03),
11. 8112863 - Method for securing wires of an armour layer of a flexible pipe body (2012-02-14),
12. 8104797 - Extended collar (2012-01-31),
13. 7963299 - Heat dissipation (2011-06-21),
14. 7946312 - Flexible pipe (2011-05-24),
15. 7640950 - Collapse tolerant flexible pipe and method of manufacturing same (2010-01-05),
Company Overview
Wellstream International Limited is a prominent player in the oil and gas sector, specializing in the design and manufacture of flexible pipes and associated technologies. The company focuses on delivering innovative solutions for offshore and subsea applications, enhancing the efficiency and safety of energy extraction processes. With a strong emphasis on research and development, Wellstream leverages advanced engineering techniques to meet the evolving demands of the global energy market, primarily serving clients in the United Kingdom and beyond.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

30 Patents

#23 in

#595 in United Kingdom

#21,924 in the World

GB
GB

Wellstream International Limited

Forward Citations = 274

29 inventors:

goldMedal Zhimin Tan (7 out of 22 patents)

silverMedal Dana Fraser (6 out of 8 patents)

bronzeMedal George Karabelas (4 out of 13 patents)

4.  Tony Eccleston (4 out of 6 patents)

5.  Helio Marins David Filho (3 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Wellstream International Limited. Retrieved from https://idiyas.com/company/wellstream-international

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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