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Douglas S. Drumheller
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Cedar Crest, NM, US
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Patents Grants
last 30 patents
Information
Patent Grant
Acoustic telemetry stacked-ring wave delay isolator system and method
Patent number
9,458,712
Issue date
Oct 4, 2016
XACT Downhole Telemetry, Inc.
Paul L. Camwell
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information
Patent Grant
Acoustic telemetry stacked-ring wave delay isolator system and method
Patent number
8,982,667
Issue date
Mar 17, 2015
XAcT Downhole Telemetry, Inc.
Paul L. Camwell
G01 - MEASURING TESTING
Information
Patent Grant
Telemetry wave detection apparatus and method
Patent number
8,823,543
Issue date
Sep 2, 2014
XAcT Downhole Telemetry Inc.
Paul L. Camwell
E21 - EARTH DRILLING MINING
Information
Patent Grant
Parallel-path acoustic telemetry isolation system and method
Patent number
8,437,220
Issue date
May 7, 2013
Xact Downhold Telemetry, Inc.
Paul L. Camwell
E21 - EARTH DRILLING MINING
Information
Patent Grant
Acoustic isolator
Patent number
8,270,251
Issue date
Sep 18, 2012
XAcT Downhole Telemetry Inc.
Douglas S. Drumheller
G01 - MEASURING TESTING
Information
Patent Grant
Telemetry wave detection apparatus and method
Patent number
7,928,861
Issue date
Apr 19, 2011
XAcT Downhole Telemetry Inc.
Paul L. Camwell
E21 - EARTH DRILLING MINING
Information
Patent Grant
Reducing injection loss in drill strings
Patent number
6,791,470
Issue date
Sep 14, 2004
Sandia Corporation
Douglas S. Drumheller
G01 - MEASURING TESTING
Information
Patent Grant
Extension method of drillstring component assembly
Patent number
6,188,647
Issue date
Feb 13, 2001
Sandia Corporation
Douglas S. Drumheller
B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
Information
Patent Grant
Acoustic transducer
Patent number
6,147,932
Issue date
Nov 14, 2000
Sandia Corporation
Douglas S. Drumheller
B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
Information
Patent Grant
Well-pump alignment system
Patent number
5,823,261
Issue date
Oct 20, 1998
Sandia Corporation
Douglas S. Drumheller
E21 - EARTH DRILLING MINING
Information
Patent Grant
Acoustic transducer
Patent number
5,703,836
Issue date
Dec 30, 1997
Sandia Corporation
Douglas S. Drumheller
B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
Information
Patent Grant
Downhole pipe selection for acoustic telemetry
Patent number
5,477,505
Issue date
Dec 19, 1995
Sandia Corporation
Douglas S. Drumheller
E21 - EARTH DRILLING MINING
Information
Patent Grant
Circuit for echo and noise suppression of accoustic signals transmi...
Patent number
5,274,606
Issue date
Dec 28, 1993
Douglas S. Drumheller
E21 - EARTH DRILLING MINING
Information
Patent Grant
Electromechanical transducer for acoustic telemetry system
Patent number
5,222,049
Issue date
Jun 22, 1993
Teleco Oilfield Services Inc.
Douglas S. Drumheller
B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
Information
Patent Grant
Acoustic data transmission through a drillstring
Patent number
5,128,901
Issue date
Jul 7, 1992
Teleco Oilfield Services Inc.
Douglas S. Drumheller
E21 - EARTH DRILLING MINING
Information
Patent Grant
Analog circuit for controlling acoustic transducer arrays
Patent number
5,056,067
Issue date
Oct 8, 1991
Teleco Oilfield Services Inc.
Douglas S. Drumheller
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Patents Applications
last 30 patents
Information
Patent Application
ACOUSTIC RECEIVER FOR USE ON A DRILL STRING
Publication number
20160024913
Publication date
Jan 28, 2016
XACT Downhole Telemetry Inc.
Paul Camwell
E21 - EARTH DRILLING MINING
Information
Patent Application
ACOUSTIC TELEMETRY STACKED-RING WAVE DELAY ISOLATOR SYSTEM AND METHOD
Publication number
20150192010
Publication date
Jul 9, 2015
Xact Downhole Telemetry, Inc.
Paul L. Camwell
E21 - EARTH DRILLING MINING
Information
Patent Application
TELEMETRY WAVE DETECTION APPARATUS AND METHOD
Publication number
20110163889
Publication date
Jul 7, 2011
XAcT Downhole Telemetry Inc.
Paul L. Camwell
E21 - EARTH DRILLING MINING
Information
Patent Application
ACOUSTIC TELEMETRY STACKED-RING WAVE DELAY ISOLATOR SYSTEM AND METHOD
Publication number
20100208552
Publication date
Aug 19, 2010
Paul L. Camwell
E21 - EARTH DRILLING MINING
Information
Patent Application
PARALLEL-PATH ACOUSTIC TELEMETRY ISOLATION SYSTEM AND METHOD
Publication number
20100195441
Publication date
Aug 5, 2010
Paul L. Camwell
E21 - EARTH DRILLING MINING
Information
Patent Application
ACOUSTIC ISOLATOR
Publication number
20100157741
Publication date
Jun 24, 2010
XAcT Downhole Telemetry Inc.
Douglas S. Drumheller
G01 - MEASURING TESTING
Information
Patent Application
Telemetry wave detection apparatus and method
Publication number
20070258326
Publication date
Nov 8, 2007
XAcT Downhole Telemetry Inc.
Paul L. Camwell
E21 - EARTH DRILLING MINING
Information
Patent Application
Acoustic isolator
Publication number
20070153629
Publication date
Jul 5, 2007
Douglas S. Drumheller
G01 - MEASURING TESTING