Inventor · disambiguated record
Douglas S. Drumheller
Also filed as: DRUMHELLER DOUGLAS S
17 granted patents·1 pending application·686 citations·filing 1990–2015
95Inventor score
Files withSANDIA CORP6CAMWELL PAUL L3DRUMHELLER DOUGLAS S3TELECO OILFIELD SERVICES INC3XACT DOWNHOLE TELEMETRY INC2
Top patents by PatentIndex Score
18 records- 0194US5128901AAcoustic data transmission through a drillstringTELECO OILFIELD SERVICES INC·Filed 1990·Granted Jul 7, 1992·176 cites·45 claims
- 0288US6147932AAcoustic transducerSANDIA CORP·Filed 1999·Granted Nov 14, 2000·67 cites·17 claims
- 0388US5222049AElectromechanical transducer for acoustic telemetry systemTELECO OILFIELD SERVICES INC·Filed 1990·Granted Jun 22, 1993·62 cites·40 claims
- 0479US5477505ADownhole pipe selection for acoustic telemetrySANDIA CORP·Filed 1994·Granted Dec 19, 1995·70 cites·7 claims
- 0578US5274606ACircuit for echo and noise suppression of accoustic signals transmitted through a drill stringDRUMHELLER DOUGLAS S·Filed 1992·Granted Dec 28, 1993·86 cites·7 claims
- 0671US5056067AAnalog circuit for controlling acoustic transducer arraysTELECO OILFIELD SERVICES INC·Filed 1990·Granted Oct 8, 1991·38 cites·10 claims
- 0770US10408050B2Acoustic receiver for use on a drill stringBAKER HUGHES OILFIELD OPERATIONS LLC·Filed 2014·Granted Sep 10, 2019·3 cites·28 claims
- 0870US6188647B1Extension method of drillstring component assemblySANDIA CORP·Filed 1999·Granted Feb 13, 2001·55 cites·19 claims
- 0970US5703836AAcoustic transducerSANDIA CORP·Filed 1996·Granted Dec 30, 1997·58 cites·15 claims
- 1067US8982667B2Acoustic telemetry stacked-ring wave delay isolator system and methodCAMWELL PAUL L·Filed 2010·Granted Mar 17, 2015·3 cites·14 claims
- 1166US7928861B2Telemetry wave detection apparatus and methodXACT DOWNHOLE TELEMETRY INC·Filed 2007·Granted Apr 19, 2011·8 cites·14 claims
- 1265US8823543B2Telemetry wave detection apparatus and methodCAMWELL PAUL L·Filed 2011·Granted Sep 2, 2014·2 cites·10 claims
- 1364US6791470B1Reducing injection loss in drill stringsSANDIA CORP·Filed 2001·Granted Sep 14, 2004·27 cites·40 claims
- 1460US5823261AWell-pump alignment systemSANDIA CORP·Filed 1996·Granted Oct 20, 1998·25 cites·18 claims
- 1559US8437220B2Parallel-path acoustic telemetry isolation system and methodCAMWELL PAUL L·Filed 2010·Granted May 7, 2013·2 cites·21 claims
- 1656US8270251B2Acoustic isolatorDRUMHELLER DOUGLAS S·Filed 2009·Granted Sep 18, 2012·4 cites·17 claims
- 1748US9458712B2Acoustic telemetry stacked-ring wave delay isolator system and methodXACT DOWNHOLE TELEMETRY INC·Filed 2015·Granted Oct 4, 2016·0 cites·15 claims
- 1836US2007153629A1Acoustic isolatorDRUMHELLER DOUGLAS S·Filed 2006·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Douglas S. Drumheller files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →