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For the Inventor, By the Inventor

Houston, TX, United States of America

Aker Subsea Inc.

Calculating rank
USPTO Granted Patents = 30

% Expired Patents = 33.3



Forward Citations = 138

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36 inventors (with patents filed for the assignee):

goldMedal Richard Hope Carter (4 out of 4 patents)

silverMedal Paulo Cezar Silva Paulo (4 out of 7 patents)

bronzeMedal Stuart James Ellison (3 out of 10 patents)

4.  Matthew H Tibbitts (3 out of 4 patents)

5.  Andrew D Gledhill (3 out of 5 patents)

6.  Daniel A Willoughby (3 out of 3 patents)

7.  Oystein Mogedal (3 out of 4 patents)

8.  Mark Hathaway (2 out of 11 patents)

9.  David S Innes (2 out of 2 patents)

10.  Glen H Cuiper (2 out of 12 patents)

11.  Andy Dyson (2 out of 5 patents)

12.  Charles Li (2 out of 3 patents)

13.  Nick Newlands (2 out of 3 patents)

14.  Jan Herland (1 out of 5 patents)

15.  Walter Oswald (1 out of 2 patents)


Core Competencies:
Subsea Connections
Gate Valve Assembly
Condition Monitoring
Preloading Device
Ratchet Mechanisms
Subsea Electric Actuators
Hydraulic Valves
Wellhead Monitoring
Fluid Separation Device
Signal Encoding
Coupling
Subsea Trees

30 patents:

1. 9622367 - Subsea connections (2017-04-11),
2. 9470057 - Gate valve assembly (2016-10-18),
3. 9366705 - Condition monitoring by cross-correlation of switching-mode power supplies (2016-06-14),
4. 9244482 - Preloading device (2016-01-26),
5. 9141130 - Ratchet and latch mechanisms (2015-09-22),
6. 9121238 - Subsea running tool with emergency release (2015-09-01),
7. 8973451 - Subsea electric actuators and latches for them (2015-03-10),
8. 8813852 - Wellhead annulus monitoring (2014-08-26),
9. 8813786 - Hydraulic valves with integral seals (2014-08-26),
10. 8771394 - Device for separating and collecting fluid in gas from a reservoir (2014-07-08),
11. 8746347 - Subsea wellhead providing controlled access to a casing annulus (2014-06-10),
12. 8678093 - Insertion of a pack-off into a wellhead (2014-03-25),
13. 8553749 - Signal encoding for frequency division multiplexing on transmission lines (2013-10-08),
14. 8544550 - Subsea wellhead with segmented fatigue reduction sleeve (2013-10-01),
15. 8532165 - Indicating and detecting the start of signal transmission employing frequency division multiplexing (2013-09-10),
Company Overview
Aker Subsea Inc., based in Houston, TX, specializes in subsea engineering and technology solutions for the oil and gas industry. The company focuses on developing advanced subsea production systems, including subsea trees, control systems, and umbilicals, aimed at enhancing the efficiency and safety of offshore operations. With a commitment to innovation, Aker Subsea integrates cutting-edge technologies to address the challenges of deepwater exploration and production, contributing to sustainable energy solutions in a dynamic global market.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

Aker Subsea Inc. USPTO Patent Assignee Logo
30 Patents

#173 in Houston, TX

#623 in Texas

#11,279 in US

#21,912 in the World

Houston, TX (US)
Houston, TX, United States of America

Aker Subsea Inc.

Forward Citations = 138

36 inventors:

goldMedal Richard Hope Carter (4 out of 4 patents)

silverMedal Paulo Cezar Silva Paulo (4 out of 7 patents)

bronzeMedal Stuart James Ellison (3 out of 10 patents)

4.  Matthew H Tibbitts (3 out of 4 patents)

5.  Andrew D Gledhill (3 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Aker Subsea Inc.. Retrieved from https://idiyas.com/company/aker-subsea

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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