Inventor · disambiguated record
Sergey Efremov
Also filed as: EFREMOV SERGEY · EFREMOV SERGEY V
4 granted patents·114 citations·filing 2003–2005
80Inventor score
Technology areasG01V
Files withBAKER HUGHES INC4
Top patents by PatentIndex Score
4 records- 0189US7195062B2Measurement-while-drilling assembly using real-time toolface oriented measurementsBAKER HUGHES INC·Filed 2005·Granted Mar 27, 2007·27 cites·15 claims
- 0286US7000700B2Measurement-while-drilling assembly using real-time toolface oriented measurementsBAKER HUGHES INC·Filed 2003·Granted Feb 21, 2006·56 cites·33 claims
- 0384US7446308B2Method of calibrating multi-channel nuclear energy spectraBAKER HUGHES INC·Filed 2005·Granted Nov 4, 2008·22 cites·26 claims
- 0446US7129477B2Method of processing data from a dual detector LWD density logging instrument coupled with an acoustic standoff measurementBAKER HUGHES INC·Filed 2003·Granted Oct 31, 2006·9 cites·14 claims
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