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Per Sparrevik

DA Den Norske Stats Oljeselskap A.S.: 1 patents #59 of 220Top 30%
NI Norges Geotekniske Insitutt: 1 patents #5 of 8Top 65%
SA Statoil Petroleum As: 1 patents #90 of 242Top 40%
📍 Oslo, NO: #577 of 2,623 inventorsTop 25%
Overall (All Time): #1,602,920 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
10386520 Seismic sensor recording system Harald Westerdahl, Peter Hanssen, Stephen Walter HAYES, Klaus TRONSTAD 2019-08-20
6700835 System for subsea diverless metrology and hard-pipe connection of pipelines Nic Ward, Andy Walker 2004-03-02
6612397 Shear wave generator Harald Westerdahl, Christian Madshus 2003-09-02