Inventor · disambiguated record
Stefan Butuc
Also filed as: BUTUC STEFAN · BUTUC STEFAN M
7 granted patents·5 pending applications·59 citations·filing 2007–2025
84Inventor score
Top patents by PatentIndex Score
12 records- 0192US8944789B2Enhanced elastomeric stator insert via reinforcing agent distribution and orientationBUTUC STEFAN·Filed 2011·Granted Feb 3, 2015·20 cites·26 claims
- 0289US9309767B2Reinforced stators and fabrication methodsSRESHTA HAROLD A·Filed 2011·Granted Apr 12, 2016·9 cites·27 claims
- 0381US8176933B2Annular BOP packing unitHUFF PHILIP A·Filed 2007·Granted May 15, 2012·18 cites·23 claims
- 0473US8383559B2Releasable corrosion inhibitorsNAT OILWELL VARCO LP·Filed 2010·Granted Feb 26, 2013·4 cites·13 claims
- 0571US8865309B2Releasable corrosion inhibitorsNAT OILWELL VARCO LP·Filed 2013·Granted Oct 21, 2014·5 cites·29 claims
- 0665US12378371B2Stator compound having an azide cured elastomeric base and stators and downhole motors using the samePV FLUID PRODUCTS INC·Filed 2020·Granted Aug 5, 2025·0 cites·33 claims
- 0765US2025304752A1Stator compound having an azide cured elastomeric base and stators and downhole motors using the samePV FLUID PRODUCTS INC·Filed 2025·Application pending·0 cites
- 0864US7736556B2Revised cure cycle for annular packing unitsHYDRIL USA MFG LLC·Filed 2007·Granted Jun 15, 2010·3 cites·24 claims
- 0947US2010140516A1Bop packing units selectively treated with electron beam radiation and related methodsBUTUC STEFAN·Filed 2008·Application pending·0 cites
- 1040US2013251572A1Methods and Apparatus for Enhancing Elastomeric Stator Insert Material Properties with RadiationBUTUC STEFAN M·Filed 2011·Application pending·0 cites
- 1140US2009260888A1Fiber Reinforced Pressure Compensator DiaphragmBAKER HUGHES INC·Filed 2009·Application pending·0 cites
- 1234US2015129660A1Method and apparatus for retaining an electronic tag on a downhole toolNAT OILWELL VARCO LP·Filed 2013·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →