Inventor · disambiguated record
Harold J. Engebretson
Also filed as: ENGEBRETSON HAROLD · ENGEBRETSON HAROLD J
8 granted patents·391 citations·filing 1982–2004
90Inventor score
Top patents by PatentIndex Score
8 records- 0188US4472884ABorehole azimuth determination using magnetic field sensorAPPLIED TECH ASS·Filed 1982·Granted Sep 25, 1984·54 cites·2 claims
- 0284US4433491AAzimuth determination for vector sensor toolsAPPLIED TECH ASS·Filed 1982·Granted Feb 28, 1984·72 cites·32 claims
- 0378US5155916AError reduction in compensation of drill string interference for magnetic survey toolsSCIENT DRILLING INT·Filed 1991·Granted Oct 20, 1992·73 cites·39 claims
- 0475US5321893ACalibration correction method for magnetic survey toolsSCIENT DRILLING INT·Filed 1993·Granted Jun 21, 1994·64 cites·22 claims
- 0567US4559713AAzimuth determination for vector sensor toolsAPPLIED TECH ASS·Filed 1983·Granted Dec 24, 1985·34 cites·41 claims
- 0666US7028409B2Method for computation of differential azimuth from spaced-apart gravity component measurementsSCIENT DRILLING INT·Filed 2004·Granted Apr 18, 2006·26 cites·14 claims
- 0765US4594790ABorehole surveying employing ring laser gyroscopeAPPLIED TECH ASS·Filed 1982·Granted Jun 17, 1986·31 cites·1 claims
- 0864US4593559AApparatus and method to communicate bidirectional information in a boreholeAPPLIED TECH ASS·Filed 1985·Granted Jun 10, 1986·37 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →