% Expired Patents = 40.0

CIPO Patents = 2

EPO Patents = 1

Forward Citations = 230

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6 inventors (with patents filed for the assignee):

Borre Fossli (6 out of 10 patents)

Sigbjorn Sangesland (2 out of 2 patents)

Børre Fossli (1 out of 3 patents)

4. Paul Anthony Potter (1 out of 1 patent)

5. Svein Gleditsch (1 out of 2 patents)

6. Harald Moksvold (1 out of 2 patents)

7. Sigbjørn Sangesland (0 patent)

8. Boerre Fossli (0 patent)

10 patents: Sort by Forward Citations

1. 9062498 - Riserless, pollutionless drilling system (2015-06-23),

2. 8978774 - System and method for drilling a subsea well (2015-03-17),

3. 8640778 - Systems and methods for subsea drilling (2014-02-04),

4. 8573307 - High pressure sleeve for dual bore HP riser (2013-11-05),

5. 8322439 - Arrangement and method for regulating bottom hole pressures when drilling deepwater offshore wells (2012-12-04),

6. 7950463 - Method and arrangement for removing soils, particles or fluids from the seabed or from great sea depths (2011-05-31),

7. 7513310 - Method and arrangement for performing drilling operations (2009-04-07),

8. 7497266 - Arrangement and method for controlling and regulating bottom hole pressure when drilling deepwater offshore wells (2009-03-03),

9. 7367410 - Method and device for liner system (2008-05-06),

10. 7264058 - Arrangement and method for regulating bottom hole pressures when drilling deepwater offshore wells (2007-09-04),

Company Overview

Ocean Riser Systems AS is a specialized engineering firm based in Oslo, Norway, focusing on the development and manufacturing of advanced riser systems for offshore applications. The company is dedicated to enhancing the safety and efficiency of subsea operations, particularly in the oil and gas sector. With a strong emphasis on innovation, Ocean Riser Systems leverages cutting-edge technology to address the challenges of deepwater drilling and production, contributing to the evolution of sustainable offshore energy solutions.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

10 Patents

#53 in Oslo

#167 in Norway

#55,986 in the World

Oslo, Norway

Ocean Riser Systems as

Forward Citations = 230

6 inventors:

Borre Fossli (6 out of 10 patents)

Sigbjorn Sangesland (2 out of 2 patents)

Børre Fossli (1 out of 3 patents)

4. Paul Anthony Potter (1 out of 1 patent)

5. Svein Gleditsch (1 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Ocean Riser Systems as. Retrieved from https://idiyas.com/company/ocean-riser-systems-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]

2 patents (CIPO):

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]

1 patent (EPO):

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]