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Keith W. Katahara
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Allen, TX, US
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Patents Grants
last 30 patents
Information
Patent Grant
Sensor in bit for measuring formation properties while drilling
Patent number
6,150,822
Issue date
Nov 21, 2000
Atlantic Richfield Company
Harry T. Hong
E21 - EARTH DRILLING MINING
Information
Patent Grant
Inspecting a conductive object with a steady state magnetic field a...
Patent number
5,670,878
Issue date
Sep 23, 1997
Atlantic Richfield Company
Keith W. Katahara
G01 - MEASURING TESTING
Information
Patent Grant
Method and apparatus for detecting and measuring gelled pigs in tub...
Patent number
5,522,264
Issue date
Jun 4, 1996
Atlantic Richfield Company
Lonnie J. Smith
G01 - MEASURING TESTING
Information
Patent Grant
Sensor in bit for measuring formation properties while drilling inc...
Patent number
5,475,309
Issue date
Dec 12, 1995
Atlantic Richfield Company
Harry T. Hong
E21 - EARTH DRILLING MINING
Information
Patent Grant
Downhole wellbore tool for measuring flow parameters
Patent number
5,251,479
Issue date
Oct 12, 1993
Atlantic Richfield Company
Robert W. Siegfried
E21 - EARTH DRILLING MINING
Information
Patent Grant
Well perforation inspection
Patent number
5,218,573
Issue date
Jun 8, 1993
Atlantic Richfield Company
Keith W. Katahara
E21 - EARTH DRILLING MINING
Information
Patent Grant
Transducers for acoustic logging tool
Patent number
5,119,343
Issue date
Jun 2, 1992
Atlantic Richfield Company
Keith W. Katahara
G01 - MEASURING TESTING
Information
Patent Grant
Acoustic signal transmitter for logging tools
Patent number
5,069,307
Issue date
Dec 3, 1991
Atlantic Richfield Company
Keith W. Katahara
G01 - MEASURING TESTING
Information
Patent Grant
Piezoelectric transducer with displacement amplifier
Patent number
5,063,542
Issue date
Nov 5, 1991
Atlantic Richfield Company
Steven G. Petermann
B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
Information
Patent Grant
Magnetostrictive transducer for logging tool
Patent number
5,020,036
Issue date
May 28, 1991
Atlantic Richfield Company
Steven G. Petermann
B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
Information
Patent Grant
Piezoelectric transducer
Patent number
4,975,615
Issue date
Dec 4, 1990
Atlantic Richfield Company
Keith W. Katahara
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Acoustic logging tool transducers
Patent number
4,949,316
Issue date
Aug 14, 1990
Atlantic Richfield Company
Keith W. Katahara
G01 - MEASURING TESTING
Information
Patent Grant
Method for acoustically measuring wall thickness of tubular goods
Patent number
4,912,683
Issue date
Mar 27, 1990
Atlantic Richfield Company
Keith W. Katahara
E21 - EARTH DRILLING MINING
Information
Patent Grant
Acoustical well logging method and apparatus
Patent number
4,899,844
Issue date
Feb 13, 1990
Atlantic Richfield Company
Keith W. Katahara
G01 - MEASURING TESTING