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Richard Rosthal
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Richmond, CA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Method and apparatus for removal of the double indication of defect...
Patent number
9,476,857
Issue date
Oct 25, 2016
Emmanuel Legendre
E21 - EARTH DRILLING MINING
Information
Patent Grant
Surface to borehole electromagnetic surveying using metallic well c...
Patent number
9,069,097
Issue date
Jun 30, 2015
Schlumberger Technology Corporation
Hong Zhang
G01 - MEASURING TESTING
Information
Patent Grant
Electromagnetic logging between a cased borehole and surface
Patent number
9,035,657
Issue date
May 19, 2015
Schlumberger Technology Corporation
Hong Zhang
G01 - MEASURING TESTING
Information
Patent Grant
Method and apparatus for removal of the double indication of defect...
Patent number
8,958,989
Issue date
Feb 17, 2015
Schlumberger Technology Corporation
Emmanuel Legendre
G01 - MEASURING TESTING
Information
Patent Grant
Measuring casing attenuation coefficient for electro-magnetics meas...
Patent number
8,704,523
Issue date
Apr 22, 2014
Schlumberger Technology Corporation
Cyrille Levesque
G01 - MEASURING TESTING
Information
Patent Grant
Electromagnetic logging between borehole and surface
Patent number
8,638,103
Issue date
Jan 28, 2014
Schlumberger Technology Corporation
Richard Rosthal
G01 - MEASURING TESTING
Information
Patent Grant
Attenuation of electromagnetic signals passing through conductive m...
Patent number
8,614,578
Issue date
Dec 24, 2013
Schlumberger Technology Corporation
Guozhong Gao
G01 - MEASURING TESTING
Information
Patent Grant
Induction coil impedance modeling using equivalent circuit parameters
Patent number
8,362,780
Issue date
Jan 29, 2013
Schlumberger Technology Corporation
Richard A. Rosthal
G01 - MEASURING TESTING
Information
Patent Grant
Correction factors for electromagnetic measurements made through co...
Patent number
8,332,191
Issue date
Dec 11, 2012
Schlumberger Technology Corporation
Richard A. Rosthal
G01 - MEASURING TESTING
Information
Patent Grant
Characterizing at least one property of a liner that lines a well
Patent number
8,326,539
Issue date
Dec 4, 2012
Schlumberger Technology Corporation
Frank Morrison
G01 - MEASURING TESTING
Information
Patent Grant
Detecting electrical current in a magnetic structure
Patent number
8,310,239
Issue date
Nov 13, 2012
Schlumberger Technology Corporation
Hong Zhang
G01 - MEASURING TESTING
Information
Patent Grant
Determining correction factors representing effects of different po...
Patent number
7,795,872
Issue date
Sep 14, 2010
Schlumberger Technology Corporation
Brian Clark
G01 - MEASURING TESTING
Information
Patent Grant
Apparatus and methods for determining isotropic and anisotropic for...
Patent number
7,619,540
Issue date
Nov 17, 2009
Schlumberger Technology Corporation
Stephen D. Bonner
G01 - MEASURING TESTING
Information
Patent Grant
Anti-symmetrized electromagnetic measurements
Patent number
7,536,261
Issue date
May 19, 2009
Schlumberger Technology Corporation
Dzevat Omeragic
G01 - MEASURING TESTING
Information
Patent Grant
Electromagnetic logging tool calibration system
Patent number
7,414,391
Issue date
Aug 19, 2008
Schlumberger Technology Corporation
Dean M. Homan
G01 - MEASURING TESTING
Information
Patent Grant
Flex (or printed) circuit axial coils for a downhole logging tool
Patent number
7,212,173
Issue date
May 1, 2007
Schlumberger Technology Corporation
Kuo-Chiang Chen
G01 - MEASURING TESTING
Information
Patent Grant
Apparatus and methods for determining isotropic and anisotropic for...
Patent number
7,091,877
Issue date
Aug 15, 2006
Schlumberger Technology Corporation
Thomas D. Barber
G01 - MEASURING TESTING
Information
Patent Grant
Directional electromagnetic measurements insensitive to dip and ani...
Patent number
6,969,994
Issue date
Nov 29, 2005
Schlumberger Technology Corporation
Gerald N. Minerbo
G01 - MEASURING TESTING
Information
Patent Grant
Method and apparatus for determining the presence and orientation o...
Patent number
6,937,021
Issue date
Aug 30, 2005
Schlumberger Technology Corporation
Richard A. Rosthal
G01 - MEASURING TESTING
Information
Patent Grant
Apparatus and methods for reducing borehole current effects
Patent number
6,933,726
Issue date
Aug 23, 2005
Schlumberger Technology Corporation
Kuo-Chiang Chen
G01 - MEASURING TESTING
Information
Patent Grant
Borehole current correction for tilted or transverse magnetic dipol...
Patent number
6,710,601
Issue date
Mar 23, 2004
Schlumberger Technology Corporation
Richard A. Rosthal
G01 - MEASURING TESTING
Information
Patent Grant
Passive, active and semi-active cancellation of borehole effects fo...
Patent number
6,693,430
Issue date
Feb 17, 2004
Schlumberger Technology Corporation
Richard A. Rosthal
G01 - MEASURING TESTING
Information
Patent Grant
Antenna structures for electromagnetic well logging tools
Patent number
6,690,170
Issue date
Feb 10, 2004
Schlumberger Technology Corporation
Dean M. Homan
G01 - MEASURING TESTING
Information
Patent Grant
Method and apparatus for cancellation of borehole effects due to a...
Patent number
6,680,613
Issue date
Jan 20, 2004
Schlumberger Technology Corporation
Richard A. Rosthal
G01 - MEASURING TESTING
Information
Patent Grant
Shielding method and apparatus using flexible strip
Patent number
6,630,830
Issue date
Oct 7, 2003
Schlumberger Technology Corporation
Dzevat Omeragic
G01 - MEASURING TESTING
Information
Patent Grant
Borehole current correction methods and apparatus
Patent number
6,624,634
Issue date
Sep 23, 2003
Schlumberger Technology Corporation
Richard A. Rosthal
G01 - MEASURING TESTING
Information
Patent Grant
Method and apparatus for cancellation of borehole effects due to a...
Patent number
6,573,722
Issue date
Jun 3, 2003
Schlumberger Technology Corporation
Richard A. Rosthal
G01 - MEASURING TESTING
Information
Patent Grant
Shielding method and apparatus using transverse slots
Patent number
6,566,881
Issue date
May 20, 2003
Schlumberger Technology Corporation
Dzevat Omeragic
G01 - MEASURING TESTING
Information
Patent Grant
Coil shielding method for selective attenuation of an electromagnet...
Patent number
6,557,794
Issue date
May 6, 2003
Schlumberger Technology Corporation
Richard A. Rosthal
G01 - MEASURING TESTING
Information
Patent Grant
Shielding apparatus for selective attenuation of an electromagnetic...
Patent number
6,380,744
Issue date
Apr 30, 2002
Schlumberger Technology Corporation
Brian Clark
G01 - MEASURING TESTING
Patents Applications
last 30 patents
Information
Patent Application
Method and Apparatus for Removal of The Double Indication of Defect...
Publication number
20150127274
Publication date
May 7, 2015
SCHLUMBERGER TECHNOLOGY CORPORATION
Emmanuel Legendre
G01 - MEASURING TESTING
Information
Patent Application
Method and Apparatus for Removal of The Double Indication of Defect...
Publication number
20120095686
Publication date
Apr 19, 2012
Emmanuel Legendre
E21 - EARTH DRILLING MINING
Information
Patent Application
SURFACE TO BOREHOLE ELECTROMAGNETIC SURVEYING USING METALLIC WELL C...
Publication number
20110308789
Publication date
Dec 22, 2011
Hong Zhang
E21 - EARTH DRILLING MINING
Information
Patent Application
CORRECTION FACTORS FOR ELECTROMAGNETIC MEASUREMENTS MADE THROUGH CO...
Publication number
20110012620
Publication date
Jan 20, 2011
Richard A. Rosthal
G01 - MEASURING TESTING
Information
Patent Application
ATTENUATION OF ELECTROMAGNETIC SIGNALS PASSING THROUGH CONDUCTIVE M...
Publication number
20100321023
Publication date
Dec 23, 2010
Guozhong Gao
G01 - MEASURING TESTING
Information
Patent Application
Determining Correction Factors Representing Effects of Different Po...
Publication number
20100308832
Publication date
Dec 9, 2010
Brian Clark
G01 - MEASURING TESTING
Information
Patent Application
ELECTROMAGNETIC LOGGING BETWEEN A CASED BOREHOLE AND SURFACE
Publication number
20100259268
Publication date
Oct 14, 2010
Hong Zhang
G01 - MEASURING TESTING
Information
Patent Application
ELECTROMAGNETIC LOGGING BETWEEN BOREHOLE AND SURFACE
Publication number
20100259267
Publication date
Oct 14, 2010
Richard Rosthal
G01 - MEASURING TESTING
Information
Patent Application
Induction Coil Impedance Modeling using Equivalent Circuit Parameters
Publication number
20100231221
Publication date
Sep 16, 2010
Richard A. Rosthal
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
DETECTING ELECTRICAL CURRENT IN A MAGNETIC STRUCTURE
Publication number
20100134112
Publication date
Jun 3, 2010
Hong Zhang
G01 - MEASURING TESTING
Information
Patent Application
MEASURING CASING ATTENUATION COEFFICIENT FOR ELECTRO-MAGNETICS MEAS...
Publication number
20090302852
Publication date
Dec 10, 2009
Cyrille Levesque
G01 - MEASURING TESTING
Information
Patent Application
Characterizing at Least One Property of a Liner that Lines a Well
Publication number
20090281731
Publication date
Nov 12, 2009
SCHLUMBERGER TECHNOLOGY CORPORATION
Frank Morrison
G01 - MEASURING TESTING
Information
Patent Application
Determining correction factors representing effects of different po...
Publication number
20090091328
Publication date
Apr 9, 2009
Brian Clark
G01 - MEASURING TESTING
Information
Patent Application
ANTI-SYMMETRIZED ELECTROMAGNETIC MEASUREMENTS
Publication number
20060253255
Publication date
Nov 9, 2006
SCHLUMBERGER TECHNOLOGY CORPORATION
Dzevat Omeragic
E21 - EARTH DRILLING MINING
Information
Patent Application
Apparatus and methods for determining isotropic and anisotropic for...
Publication number
20060202806
Publication date
Sep 14, 2006
Stephen D. Bonner
G01 - MEASURING TESTING
Information
Patent Application
APPARATUS AND METHODS FOR DETERMINING ISOTROPIC AND ANISOTROPIC FOR...
Publication number
20050088181
Publication date
Apr 28, 2005
THOMAS D. BARBER
G01 - MEASURING TESTING
Information
Patent Application
APPARATUS AND METHODS FOR REDUCING BOREHOLE CURRENT EFFECTS
Publication number
20050030038
Publication date
Feb 10, 2005
KUO-CHIANG CHEN
G01 - MEASURING TESTING
Information
Patent Application
Flex (or printed) circuit axial coils for a downhole logging tool
Publication number
20040263414
Publication date
Dec 30, 2004
Kuo-Chiang Chen
G01 - MEASURING TESTING
Information
Patent Application
Electromagnetic logging tool calibration system
Publication number
20040113609
Publication date
Jun 17, 2004
Dean M. Homan
G01 - MEASURING TESTING
Information
Patent Application
Method and apparatus for determining the presence and orientation o...
Publication number
20040108853
Publication date
Jun 10, 2004
Richard A. Rosthal
G01 - MEASURING TESTING
Information
Patent Application
Antenna structures for electromagnetic well logging tools
Publication number
20030184304
Publication date
Oct 2, 2003
Dean M. Homan
G01 - MEASURING TESTING
Information
Patent Application
Borehole current correction methods and apparatus
Publication number
20030155924
Publication date
Aug 21, 2003
SCHLUMBERGER TECHNOLOGY CORPORATION
Richard A. Rosthal
G01 - MEASURING TESTING
Information
Patent Application
SHIELDING METHOD AND APPARATUS USING FLEXIBLE STRIP
Publication number
20030155923
Publication date
Aug 21, 2003
SCHLUMBERGER TECHNOLOGY CORPORATION
Dzevat Omeragic
G01 - MEASURING TESTING
Information
Patent Application
Borehole current correction for tilted or transverse magnetic dipol...
Publication number
20030146751
Publication date
Aug 7, 2003
SCHLUMBERGER TECHNOLOGY CORPORATION
Richard A. Rosthal
G01 - MEASURING TESTING
Information
Patent Application
Method and apparatus for cancellation of borehole effects due to a...
Publication number
20030146753
Publication date
Aug 7, 2003
SCHLUMBERGER TECHNOLOGY CORPORATION
Richard A. Rosthal
G01 - MEASURING TESTING
Information
Patent Application
Directional electromagnetic measurements insensitive to dip and ani...
Publication number
20030085707
Publication date
May 8, 2003
Gerald N. Minerbo
G01 - MEASURING TESTING
Information
Patent Application
Passive, active and semi-active cancellation of borehole effects fo...
Publication number
20030011371
Publication date
Jan 16, 2003
Richard A. Rosthal
G01 - MEASURING TESTING
Information
Patent Application
Method and apparatus for cancellation of borehole effects due to a...
Publication number
20020105332
Publication date
Aug 8, 2002
Richard A. Rosthal
G01 - MEASURING TESTING
Information
Patent Application
Shielding apparatus for selective attenuation of an electromagnetic...
Publication number
20020008520
Publication date
Jan 24, 2002
SCHLUMBERGER TECHNOLOGY CORPORATION
Brian Clark
G01 - MEASURING TESTING
Information
Patent Application
Coil shielding method for selective attenuation of an electromagnet...
Publication number
20020008521
Publication date
Jan 24, 2002
SCHLUMBERGER TECHNOLOGY CORPORATION
Brian Clark
G01 - MEASURING TESTING