Inventor · disambiguated record
James A. Grau
Also filed as: GRAU JAMES · GRAU JAMES A · GRAU JAMES ANTHONY
31 granted patents·3 pending applications·475 citations·filing 1980–2022
97Inventor score
Files withSCHLUMBERGER TECHNOLOGY CORP26BERHEIDE MARKUS2GRAU JAMES A2MATHIEU GILLES1PFUTZNER HAROLD1
Top patents by PatentIndex Score
34 records- 0192US9599729B2Gamma-ray detectors for downhole applicationsSCHLUMBERGER TECHNOLOGY CORP·Filed 2014·Granted Mar 21, 2017·8 cites·8 claims
- 0290US10247849B2Method for measuring formation water salinity from within a boreholePFUTZNER HAROLD·Filed 2012·Granted Apr 2, 2019·14 cites·17 claims
- 0389US9835759B2Neutron-induced gamma-ray spectroscopy that accounts for environmental dependence of inelastic gamma-ray emission spectraSCHLUMBERGER TECHNOLOGY CORP·Filed 2015·Granted Dec 5, 2017·4 cites·30 claims
- 0487US12025767B2Measuring spectral contributions of elements in regions in and about a borehole using a borehole spectroscopy toolSCHLUMBERGER TECHNOLOGY CORP·Filed 2019·Granted Jul 2, 2024·3 cites·20 claims
- 0587US4390783ASpectroscopic analysis with background compensationSCHLUMBERGER TECHNOLOGY CORP·Filed 1981·Granted Jun 28, 1983·47 cites·20 claims
- 0686US4810876ALogging apparatus and method for determining absolute elemental concentrations of subsurface formationsSCHLUMBERGER TECHNOLOGY CORP·Filed 1986·Granted Mar 7, 1989·63 cites·81 claims
- 0783US9851468B2Hydrocarbon saturation from total organic carbon logs derived from inelastic and capture nuclear spectroscopySCHLUMBERGER TECHNOLOGY CORP·Filed 2013·Granted Dec 26, 2017·6 cites·12 claims
- 0883US8963073B2Nuclear spectroscopy corrections using multiple standards and spatial regionsGRAU JAMES A·Filed 2012·Granted Feb 24, 2015·7 cites·19 claims
- 0983US8536517B2Scintillator based radiation detectionBERHEIDE MARKUS·Filed 2010·Granted Sep 17, 2013·7 cites·56 claims
- 1082US10429540B2Combining inelastic and capture gamma ray spectroscopy for determining formation elementalSCHLUMBERGER TECHNOLOGY CORP·Filed 2012·Granted Oct 1, 2019·5 cites·22 claims
- 1182US8431885B2Gamma-ray detectors for downhole applicationsROSCOE BRADLEY A·Filed 2010·Granted Apr 30, 2013·5 cites·28 claims
- 1281US9835758B2Method for filtering for interpretation of neutron induced gamma ray measurementsSCHLUMBERGER TECHNOLOGY CORP·Filed 2015·Granted Dec 5, 2017·2 cites·20 claims
- 1381US4661701AMethods and apparatus for borehole-corrected spectral analysis of earth formationsSCHLUMBERGER TECHNOLOGY CORP·Filed 1985·Granted Apr 28, 1987·47 cites·30 claims
- 1481US4394574AMethods and apparatus for constituent analysis of earth formationsSCHLUMBERGER TECHNOLOGY CORP·Filed 1980·Granted Jul 19, 1983·38 cites·22 claims
- 1580US9541668B2Environmental corrections in nuclear spectroscopy using variable element ratioGRAU JAMES A·Filed 2012·Granted Jan 10, 2017·6 cites·15 claims
- 1680US7366615B2Methods and apparatus using both nuclear capture and inelastic spectroscopy in deriving elemental concentrationsSCHLUMBER TECHNOLOGY CORP·Filed 2006·Granted Apr 29, 2008·18 cites·32 claims
- 1779US5097123ABroad energy spectra neutron source for logging and methodSCHLUMBERGER TECHNOLOGY CORP·Filed 1991·Granted Mar 17, 1992·53 cites·14 claims
- 1878US9575208B2Geological constituent estimation using calculated spectra relationshipsSCHLUMBERGER TECHNOLOGY CORP·Filed 2014·Granted Feb 21, 2017·4 cites·24 claims
- 1978US5171986AMethods and apparatus for calibration of BGO scintillator gamma ray energy spectraSCHLUMBERGER TECHNOLOGY CORP·Filed 1991·Granted Dec 15, 1992·36 cites·14 claims
- 2076US9417355B2Composition-matched inelastic or capture spectroscopy toolSCHLUMBERGER TECHNOLOGY CORP·Filed 2013·Granted Aug 16, 2016·4 cites·15 claims
- 2170US4587424AMethod for investigating the composition of an earth formation traversed by a boreholeSCHLUMBERGER TECHNOLOGY CORP·Filed 1983·Granted May 6, 1986·25 cites·48 claims
- 2269US9568639B2Borehole tool calibration methodSCHLUMBERGER TECHNOLOGY CORP·Filed 2014·Granted Feb 14, 2017·2 cites·20 claims
- 2368US12061308B2Porosity measurements from nuclear spectroscopySCHLUMBERGER TECHNOLOGY CORP·Filed 2022·Granted Aug 13, 2024·0 cites·20 claims
- 2468US8901483B2Gamma-ray detectors for downhole applicationsSCHLUMBERGER TECHNOLOGY CORP·Filed 2013·Granted Dec 2, 2014·1 cites·28 claims
- 2567US9091774B2Method of determining an element valueSCHLUMBERGER TECHNOLOGY CORP·Filed 2013·Granted Jul 28, 2015·2 cites·20 claims
- 2665US8546749B2Intrinsic radioactivity in a scintillator as count rate referenceBERHEIDE MARKUS·Filed 2010·Granted Oct 1, 2013·2 cites·49 claims
- 2762US8927920B2Correcting gamma-ray energy spectra for pileup degradationSCHLUMBERGER TECHNOLOGY CORP·Filed 2013·Granted Jan 6, 2015·1 cites·26 claims
- 2861US10145979B2Gamma-ray detectors for downhole applicationsSCHLUMBERGER TECHNOLOGY CORP·Filed 2017·Granted Dec 4, 2018·0 cites·20 claims
- 2961US5021653AGeochemical logging apparatus and method for determining concentrations of formation elements next to a boreholeSCHLUMBERGER TECHNOLOGY CORP·Filed 1990·Granted Jun 4, 1991·33 cites·38 claims
- 3060US9234980B2Mining systems and methodsMATHIEU GILLES·Filed 2011·Granted Jan 12, 2016·2 cites·14 claims
- 3157US5521378AMethod and apparatus for gamma ray logging of underground formationsSCHLUMBERGER TECHNOLOGY CORP·Filed 1995·Granted May 28, 1996·30 cites·18 claims
- 3243US2015285943A1Alpha Processing to Improve Accuracy and Precision of Elemental Concentrations from Gamma-Ray SpectroscopySCHLUMBERGER TECHNOLOGY CORP·Filed 2013·Application pending·0 cites
- 3341US2014138530A1Environmental Corrections in Nuclear Spectroscopy Using Variable Shape StandardSCHLUMBERGER TECHNOLOGY CORP·Filed 2012·Application pending·0 cites
- 3437US2016047938A1Correction to Determined Formation Sulfur to Account for Sulfur in the WellboreSCHLUMBERGER TECHNOLOGY CORP·Filed 2015·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →