Inventor · disambiguated record
Russel C. Hertzog
Also filed as: HERTZOG JR RUSSEL · HERTZOG JR RUSSEL C · HERTZOG RUSSEL · HERTZOG RUSSEL C
9 granted patents·2 pending applications·225 citations·filing 1979–2014
89Inventor score
Files withSCHLUMBERGER TECHNOLOGY CORP6GE OIL & GAS LOGGING SERVICES INC2SMAARDYK JOHN EDWARD2WOOD GROUP LOGGING SERVICES IN1
Top patents by PatentIndex Score
11 records- 0191US4317993AMethods and apparatus for constituent analysis of earth formationsSCHLUMBERGER TECHNOLOGY CORP·Filed 1979·Granted Mar 2, 1982·57 cites·58 claims
- 0286US4810876ALogging apparatus and method for determining absolute elemental concentrations of subsurface formationsSCHLUMBERGER TECHNOLOGY CORP·Filed 1986·Granted Mar 7, 1989·63 cites·81 claims
- 0382US9267359B2Method and apparatus for interrogating a subterranean annulusSMAARDYK JOHN EDWARD·Filed 2011·Granted Feb 23, 2016·7 cites·17 claims
- 0481US4394574AMethods and apparatus for constituent analysis of earth formationsSCHLUMBERGER TECHNOLOGY CORP·Filed 1980·Granted Jul 19, 1983·38 cites·22 claims
- 0578US4507554AMethod and apparatus for determining borehole and formation constituentsSCHLUMBERGER TECHNOLOGY CORP·Filed 1983·Granted Mar 26, 1985·34 cites·16 claims
- 0676US8754362B2Method for detecting fractures and perforations in a subterranean formationGE OIL & GAS LOGGING SERVICES INC·Filed 2012·Granted Jun 17, 2014·4 cites·20 claims
- 0764US4232220ABackground subtraction system for pulsed neutron logging of earth boreholesSCHLUMBERGER TECHNOLOGY CORP·Filed 1979·Granted Nov 4, 1980·19 cites·15 claims
- 0855US8878126B2Method for inspecting a subterranean tubularSMAARDYK JOHN EDWARD·Filed 2012·Granted Nov 4, 2014·1 cites·18 claims
- 0941US2014291500A1Method for Evaluating Voids in a Subterranean FormationGE OIL & GAS LOGGING SERVICES INC·Filed 2014·Application pending·0 cites
- 1039US2010017134A1Gravel pack assessment tool and methods of useWOOD GROUP LOGGING SERVICES IN·Filed 2009·Application pending·0 cites
- 1130US4284886ARandom pulsing of neutron source for inelastic neutron scattering gamma ray spectroscopySCHLUMBERGER TECHNOLOGY CORP·Filed 1979·Granted Aug 18, 1981·2 cites·17 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →