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Stavanger, Norway

Roxar Flow Measurement as

USPTO Granted Patents = 40

% Expired Patents = 30.0

EPO Patents = 35

Trademarks = 4

Forward Citations = 238

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34 inventors (with patents filed for the assignee):

Ebbe Gustaf Nyfors (10 out of 12 patents)

Terje Baustad (4 out of 8 patents)

Per Hassel Sørensen (4 out of 6 patents)

4. Ivar Breen (3 out of 5 patents)

5. Olav Espejord (2 out of 2 patents)

6. Morten Ivar Andersen (2 out of 3 patents)

7. Christophe Tarayre (2 out of 3 patents)

8. Rolf Wium (2 out of 2 patents)

9. Rune Sørhus (2 out of 2 patents)

10. Morten Brandt (2 out of 2 patents)

11. Øystein Lund Bø (2 out of 2 patents)

12. Dag Erik Laumann (2 out of 2 patents)

13. Erik Undheim (2 out of 2 patents)

14. Jone Svihus (1 out of 1 patent)

15. Trond Hagen (1 out of 8 patents)

Core Competencies:

Flow Meter

Multiphase Flow

Fluid Measurement

Electrical Impedance

Density Measurement

Salinity Measurement

Pressure Transducer

Microwave Measurement

Downhole Gauge

Acoustic Barrier

Fluid Composition

Cable Protection

40 patents: Sort by Forward Citations

1. 12372389 - Flow meter for measuring flow velocity in oil continuous flows (2025-07-29),

2. 12253395 - Enlarged pipe section for microwave-based flow measurements (2025-03-18),

3. 12038392 - System for detection of drift of the water volume fraction in a flow (2024-07-16),

4. 11971382 - System for measuring the composition of a multi-phase flow in a pipe by analyzing electrical characteristics (2024-04-30),

5. 11959785 - System and method for measuring a multiphase flow by measuring density and electrical impedance for correcting the measurement due to effect of deposits on inner surface of pipe walls (2024-04-16),

6. 11834912 - High pressure cable head connector (2023-12-05),

7. 11415446 - Flow measuring system (2022-08-16),

8. D924910 - Computer screen with graphical user interface (2021-07-13),

9. 11053751 - Cable protecting device (2021-07-06),

10. 11016037 - Fluid measuring system (2021-05-25),

11. 10852224 - Method of measuring metal loss from equipment in process systems (2020-12-01),

12. 10359372 - Conductivity measurements (2019-07-23),

13. 10337260 - Cable protecting device (2019-07-02),

14. 10060869 - System for measuring characteristics of a fluid flow (2018-08-28),

15. 9976411 - Position indicator for determining the relative position and/or movement of downhole tool components, and method thereof (2018-05-22),

Company Overview

Roxar Flow Measurement AS, based in Stavanger, Norway, specializes in advanced flow measurement technologies, focusing on multiphase flow and fluid dynamics. The company develops innovative solutions that enhance the accuracy of density measurement and electrical impedance techniques, particularly in challenging environments such as downhole and subsea applications. With a commitment to improving operational efficiency, Roxar leverages cutting-edge microwave sensors to provide reliable data for the oil and gas industry, ensuring optimal resource management.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

40 Patents

#6 in Stavanger

#41 in Norway

#17,048 in the World

Stavanger, Norway

Roxar Flow Measurement as

Forward Citations = 238

34 inventors:

Ebbe Gustaf Nyfors (10 out of 12 patents)

Terje Baustad (4 out of 8 patents)

Per Hassel Sørensen (4 out of 6 patents)

4. Ivar Breen (3 out of 5 patents)

5. Olav Espejord (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Roxar Flow Measurement as. Retrieved from https://idiyas.com/company/roxar-flow-measurement-as

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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