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Stavanger, Norway

Den Norske Stats Oljeselskap A.s.

USPTO Granted Patents = 146

CIPO Patents = 6

Trademarks = 1

Forward Citations = 2,385

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217 inventors (with patents filed for the assignee):

Kare G Breivik (12 out of 17 patents)

Arne Smedal (11 out of 19 patents)

Knut V Horvei (9 out of 11 patents)

4. Erling Rytter (7 out of 28 patents)

5. Egil Sunde (7 out of 12 patents)

6. Kare Syvertsen (7 out of 7 patents)

7. Bjornar Svenning (7 out of 7 patents)

8. Martin Sigmundstad (6 out of 7 patents)

9. Trond Myrstad (5 out of 6 patents)

10. Roger Tailby (5 out of 5 patents)

11. Atle B Ingebrigtsen (5 out of 5 patents)

12. Duncan E Akporiaye (4 out of 31 patents)

13. Pentti Paurola (4 out of 8 patents)

14. Harald Linga (3 out of 9 patents)

15. Dag Schanke (3 out of 9 patents)

Core Competencies:

Natural Gas Liquefaction

Hydrotalcite Catalysts

H2-Rich Gas Production

Water Cleaning Process

Directional Seismic Attributes

Subsea Diverless Metrology

Down Hole Motors

Fluid Separation Systems

Fischer-Tropsch Synthesis

Steam Injection Systems

Subsea Modules

Offshore LNG Production

146 patents: Sort by Forward Citations

1. 7386996 - Natural gas liquefaction process (2008-06-17),

2. 6967182 - Catalysts consisting of metals on hydrotalcite-based carrier materials, and method for the preparation thereof (2005-11-22),

3. 6899859 - Method for preparing a H2-rich gas and a CO2-rich gas at high pressure (2005-05-31),

4. 6875358 - Water cleaning process (2005-04-05),

5. 6838071 - Process for preparing a H2-rich gas and a CO2-rich gas at high pressure (2005-01-04),

6. 6834889 - Torque release coupling for use in drill strings (2004-12-28),

7. 6834732 - Method of assessing positional uncertainty in drilling a well (2004-12-28),

8. 6735526 - Method of combining directional seismic attributes using a supervised learning approach (2004-05-11),

9. 6700835 - System for subsea diverless metrology and hard-pipe connection of pipelines (2004-03-02),

10. 6631763 - Method and system for testing a borehole by the use of a movable plug (2003-10-14),

11. 6628119 - Method and apparatus for determining the content of subterranean reservoirs (2003-09-30),

12. 6626240 - Device for annular well isolation (2003-09-30),

13. 6607043 - Down hole motors and methods for their operation (2003-08-19),

14. 6573008 - Battery system (2003-06-03),

15. 6546962 - Introduction of air into injection water (2003-04-15),

Den Norske Stats Oljeselskap A.S. is a Norwegian state-owned oil company. It operates in the exploration, production, refining, and marketing of petroleum and petroleum-related products. The company is known for its expertise in offshore oil production and its commitment to environmentally sustainable practices. With a rich history in the oil and gas industry, Den Norske Stats Oljeselskap A.S. continues to be a key player in Norway's energy sector.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 2 2025

146 Patents

#2 in Stavanger

#8 in Norway

#5,416 in the World

Stavanger, Norway

Den Norske Stats Oljeselskap A.s.

Forward Citations = 2,385

217 inventors:

Kare G Breivik (12 out of 17 patents)

Arne Smedal (11 out of 19 patents)

Knut V Horvei (9 out of 11 patents)

4. Erling Rytter (7 out of 28 patents)

5. Egil Sunde (7 out of 12 patents)

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