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Den Norske Stats Oljesselskap A.S.
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Stavanger, NO
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last 30 patents
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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
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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
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