Inventor · disambiguated record
Svein Stubstad
Also filed as: STUBSTAD SVEIN
3 granted patents·1 pending application·63 citations·filing 2006–2008
74Inventor score
Top patents by PatentIndex Score
4 records- 0184US7748473B2Top drives with shaft multi-sealNAT OILWELL VARCO LP·Filed 2008·Granted Jul 6, 2010·26 cites·17 claims
- 0279US7487848B2Multi-seal for top drive shaftVARCO INT·Filed 2006·Granted Feb 10, 2009·21 cites·8 claims
- 0376US7401664B2Top drive systemsVARCO I P·Filed 2006·Granted Jul 22, 2008·16 cites·20 claims
- 0433US2008230274A1Top drive washpipe systemSTUBSTAD SVEIN·Filed 2008·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →