Inventor · disambiguated record
Gregory Donald West
Also filed as: WEST GREGORY DONALD
4 granted patents·5 pending applications·27 citations·filing 1999–2017
66Inventor score
Technology areasE21B
Top patents by PatentIndex Score
9 records- 0149US9803441B2Seated hammer apparatus for core samplingFLEXIDRILL LTD·Filed 2013·Granted Oct 31, 2017·1 cites·10 claims
- 0244US11136845B2Coring apparatusFLEXIDRILL LTD·Filed 2017·Granted Oct 5, 2021·0 cites·20 claims
- 0342US6179068B1Directional drilling apparatusFLEXIDRILL LTD·Filed 1999·Granted Jan 30, 2001·26 cites·18 claims
- 0432US2014332278A1Extended reach drillingFLEXIDRILL LTD·Filed 2012·Application pending·0 cites
- 0529US2014151127A1Control mechanismFLEXIDRILL LTD·Filed 2012·Application pending·0 cites
- 0626US2013186693A1Hybrid drill bitWEST GREGORY DONALD·Filed 2013·Application pending·0 cites
- 0723US8561723B2Magnetic hammerPOWELL PETER EVAN·Filed 2008·Granted Oct 22, 2013·0 cites·15 claims
- 0823US2010139984A1Rotary drive for applying rotary torque to a shaft to be axially vibratedWEST GREGORY DONALD·Filed 2008·Application pending·0 cites
- 0923US2010139912A1Drill String SuspensionPFAHLERT ROGER·Filed 2006·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →