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Anthony R. Dopf
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Bragg Cre ck, CA
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Patents Grants
last 30 patents
Information
Patent Grant
Electrically insulated threaded connection
Patent number
11,976,758
Issue date
May 7, 2024
QUANTUM ENERGY TECHNOLOGIES LLC
David A. Switzer
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Drill bit assembly having electrically isolated gap joint for elect...
Patent number
9,109,403
Issue date
Aug 18, 2015
Schlumberger Technology Corporation
Derek Logan
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Drill bit assembly having electrically isolated gap joint for measu...
Patent number
9,022,144
Issue date
May 5, 2015
Schlumberger Technology Corporation
Brian Clark
G01 - MEASURING TESTING
Information
Patent Grant
Drill bit assembly having aligned features
Patent number
9,004,196
Issue date
Apr 14, 2015
Schlumberger Technology Corporation
Kjell Haugvaldstad
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Grant
Electromagnetic telemetry assembly with protected antenna
Patent number
8,648,733
Issue date
Feb 11, 2014
Schlumberger Technology Corporation
Anthony R. Dopf
E21 - EARTH DRILLING MINING
Information
Patent Grant
Spindle for mud pulse telemetry applications
Patent number
8,634,274
Issue date
Jan 21, 2014
Schlumberger Technology Corporation
Paul L. Camwell
E21 - EARTH DRILLING MINING
Information
Patent Grant
Brush and brush housing arrangement to mitigate hydrodynamic brush...
Patent number
8,624,464
Issue date
Jan 7, 2014
Schlumberger Technology Corporation
Anthony R. Dopf
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Electrical isolation connector for electromagnetic gap sub
Patent number
8,308,199
Issue date
Nov 13, 2012
Schlumberger Technology Corporation
Paul L. Camwell
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
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
Spindle for mud pulse telemetry applications
Patent number
8,174,929
Issue date
May 8, 2012
Schlumberger Technology Corporation
Paul L. Camwell
E21 - EARTH DRILLING MINING
Information
Patent Grant
Electrical isolation connector for electromagnetic gap sub
Patent number
7,900,968
Issue date
Mar 8, 2011
Schlumberger Technology Corporation
Paul L. Camwell
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Grant
Fluid erosion protection washer for rotating shaft in MWD tool
Patent number
7,839,719
Issue date
Nov 23, 2010
Schlumberger Technology Corporation
Anthony R. Dopf
E21 - EARTH DRILLING MINING
Information
Patent Grant
Brush and brush housing arrangement to mitigate hydrodynamic brush...
Patent number
7,821,178
Issue date
Oct 26, 2010
Schlumberger Technology Corporation
Paul L. Camwell
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Fluid erosion protection washer for rotating shaft in MWD tool
Patent number
7,532,540
Issue date
May 12, 2009
Extreme Engineering Ltd.
Anthony R. Dopf
E21 - EARTH DRILLING MINING
Information
Patent Grant
Electromagnetic gap sub assembly
Patent number
7,252,160
Issue date
Aug 7, 2007
Weatherford/Lamb, Inc.
Tony Dopf
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Apparatus for receiving downhole acoustic signals
Patent number
6,956,791
Issue date
Oct 18, 2005
XAcT Downhole Telemetry Inc.
Anthony R. Dopf
G01 - MEASURING TESTING
Information
Patent Grant
Harsh environment rotatable connector
Patent number
6,902,414
Issue date
Jun 7, 2005
Extreme Engineering Ltd.
Anthony R. Dopf
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Subassembly electrical isolation connector for drill rod
Patent number
6,572,152
Issue date
Jun 3, 2003
Ryan Energy Technologies Inc.
Anthony Robert Dopf
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Dynamic pressure device for oil drill systems
Patent number
6,367,323
Issue date
Apr 9, 2002
Ryan Energy Technologies, Inc.
Paul L. Camwell
E21 - EARTH DRILLING MINING
Information
Patent Grant
Subassembly electrical isolation connector for drill rod
Patent number
6,158,532
Issue date
Dec 12, 2000
Ryan Energy Technologies, Inc.
Derek W. Logan
E21 - EARTH DRILLING MINING
Information
Patent Grant
Subassembly electrical isolation connector for drill rod
Patent number
6,050,353
Issue date
Apr 18, 2000
Ryan Energy Technologies, Inc.
Derek W. Logan
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
Information
Patent Application
ELECTRICALLY INSULATED THREADED CONNECTION
Publication number
20240191816
Publication date
Jun 13, 2024
Quantum Energy Technologies LLC
David A. Switzer
E21 - EARTH DRILLING MINING
Information
Patent Application
Drill Bit Assembly Having Electrically Isolated Gap Joint for Measu...
Publication number
20150101867
Publication date
Apr 16, 2015
SCHLUMBERGER TECHNOLOGY CORPORATION
Brian Oliver Clark
E21 - EARTH DRILLING MINING
Information
Patent Application
DRILL BIT ASSEMBLY HAVING ELECTRICALLY ISOLATED GAP JOINT FOR MEASU...
Publication number
20130043874
Publication date
Feb 21, 2013
Brian Clark
G01 - MEASURING TESTING
Information
Patent Application
DRILL BIT ASSEMBLY HAVING ALIGNED FEATURES
Publication number
20130032412
Publication date
Feb 7, 2013
Kjell Haugvaldstad
E21 - EARTH DRILLING MINING
Information
Patent Application
SPINDLE FOR MUD PULSE TELEMETRY APPLICATIONS
Publication number
20120222899
Publication date
Sep 6, 2012
SCHLUMBERGER TECHNOLOGY CORPORATION
Paul L. Camwell
E21 - EARTH DRILLING MINING
Information
Patent Application
DRILL BIT ASSEMBLY HAVING ELECTRICALLY ISOLATED GAP JOINT FOR ELECT...
Publication number
20120085583
Publication date
Apr 12, 2012
INVISTA NORTH AMERICA S.A.R.L.
Derek Logan
E21 - EARTH DRILLING MINING
Information
Patent Application
Electromagnetic Telemetry Assembly With Protected Antenna
Publication number
20110309949
Publication date
Dec 22, 2011
SCHLUMBERGER TECHNOLOGY CORPORATION
Anthony R. Dopf
E21 - EARTH DRILLING MINING
Information
Patent Application
Brush And Brush Housing Arrangement To Mitigate Hydrodynamic Brush...
Publication number
20110227447
Publication date
Sep 22, 2011
SCHLUMBERGER TECHNOLOGY CORPORATION
Anthony R. Dopf
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Electrical Isolation Connector For Electromagnetic Gap Sub
Publication number
20110036557
Publication date
Feb 17, 2011
SCHLUMBERGER TECHNOLOGY CORPORATION
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
Electrical Isolation Connector For Electromagnetic Gap Sub
Publication number
20100043229
Publication date
Feb 25, 2010
SCHLUMBERGER TECHNOLOGY CORPORATION
Paul L. Camwell
E21 - EARTH DRILLING MINING
Information
Patent Application
FLUID EROSION PROTECTION WASHER FOR ROTATING SHAFT IN MWD TOOL
Publication number
20090224193
Publication date
Sep 10, 2009
SCHLUMBERGER TECHNOLOGY CORPORATION
Anthony R. Dopf
E21 - EARTH DRILLING MINING
Information
Patent Application
SPINDLE FOR MUD PULSE TELEMETRY APPLICATIONS
Publication number
20090038851
Publication date
Feb 12, 2009
Extreme Engineering Ltd.
Paul L. Camwell
E21 - EARTH DRILLING MINING
Information
Patent Application
ELECTRICAL ISOLATION CONNECTOR FOR ELECTROMAGNETIC GAP SUB
Publication number
20080191900
Publication date
Aug 14, 2008
Extreme Engineering Ltd.
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
Information
Patent Application
Fluid erosion protection washer for rotating shaft in MWD tool
Publication number
20070045583
Publication date
Mar 1, 2007
Anthony R. Dopf
E21 - EARTH DRILLING MINING
Information
Patent Application
Brush and brush housing arrangement to mitigate hydrodynamic brush...
Publication number
20060261701
Publication date
Nov 23, 2006
Paul L. Camwell
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Electromagnetic gap sub assembly
Publication number
20050068703
Publication date
Mar 31, 2005
Tony Dopf
E21 - EARTH DRILLING MINING
Information
Patent Application
HARSH ENVIRONMENT ROTATABLE CONNECTOR
Publication number
20050070141
Publication date
Mar 31, 2005
Anthony R. Dopf
E21 - EARTH DRILLING MINING
Information
Patent Application
Apparatus for receiving downhole acoustic signals
Publication number
20040145970
Publication date
Jul 29, 2004
Extreme Engineering Ltd.
Anthony R. Dopf
E21 - EARTH DRILLING MINING
Information
Patent Application
Subassembly electrical isolation connector for drill rod
Publication number
20020113432
Publication date
Aug 22, 2002
Anthony Robert Dopf
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...