Den Norske Stats Oljesselskap A.S.

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Stavanger, NO

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Patents Grantslast 30 patents

Information Patent Grant
Torque release coupling for use in drill strings
- Patent number 6,834,889
- Issue date Dec 28, 2004
- Den norske stats oljesselskap A.S.
- Egil Sunde
- E21 - EARTH DRILLING MINING
Information Patent Grant
Catalytic multi-phase reactor
- Patent number 5,407,644
- Issue date Apr 18, 1995
- Den Norske Stats Oljesselskap A.S.
- Erling Rytter
- C07 - ORGANIC CHEMISTRY