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James T. Aumann
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Salt Lake City, UT, US
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Patents Grants
last 30 patents
Information
Patent Grant
Method and apparatus for recovering core samples under pressure
Patent number
6,659,204
Issue date
Dec 9, 2003
Japan National Oil Corporation
James T. Aumann
E21 - EARTH DRILLING MINING
Information
Patent Grant
Apparatus for recovering core samples at in situ conditions
Patent number
6,378,631
Issue date
Apr 30, 2002
James T. Aumann
E21 - EARTH DRILLING MINING
Information
Patent Grant
Method and apparatus for transferring core sample from core retriev...
Patent number
6,305,482
Issue date
Oct 23, 2001
James T. Aumann
E21 - EARTH DRILLING MINING
Information
Patent Grant
Apparatus for recovering core samples under pressure
Patent number
6,230,825
Issue date
May 15, 2001
James T. Aumann
E21 - EARTH DRILLING MINING
Information
Patent Grant
Apparatus for recovering core samples under pressure
Patent number
6,216,804
Issue date
Apr 17, 2001
James T. Aumann
E21 - EARTH DRILLING MINING
Information
Patent Grant
Method and apparatus for taking an undisturbed core sample
Patent number
5,253,720
Issue date
Oct 19, 1993
Energy Ventures, Inc.
Steven R. Radford
E21 - EARTH DRILLING MINING
Information
Patent Grant
Bearing system for a downhole motor
Patent number
4,577,704
Issue date
Mar 25, 1986
Norton Christensen, Inc.
James T. Aumann
E21 - EARTH DRILLING MINING
Information
Patent Grant
Hydraulically pulsed indexing system for sleeve-type core barrels
Patent number
4,573,539
Issue date
Mar 4, 1986
Norton Christensen, Inc.
Jimmy L. Carroll
E21 - EARTH DRILLING MINING
Information
Patent Grant
Coring device with an improved weighted core sleeve and anti-grippi...
Patent number
4,512,423
Issue date
Apr 23, 1985
Christensen, Inc.
James T. Aumann
E21 - EARTH DRILLING MINING
Information
Patent Grant
Coring device with an improved core sleeve and anti-gripping collar
Patent number
4,512,419
Issue date
Apr 23, 1985
Christensen, Inc.
David S. Rowley
E21 - EARTH DRILLING MINING
Information
Patent Grant
Drill string safety valve
Patent number
4,391,328
Issue date
Jul 5, 1983
Christensen, Inc.
James T. Aumann
E21 - EARTH DRILLING MINING
Information
Patent Grant
Composite heavy metal drill collar
Patent number
4,278,138
Issue date
Jul 14, 1981
Christensen, Inc.
David S. Rowley
E21 - EARTH DRILLING MINING
Information
Patent Grant
Pressure core barrel flushing system
Patent number
4,272,987
Issue date
Jun 16, 1981
Christensen, Inc.
James T. Aumann
E21 - EARTH DRILLING MINING
Information
Patent Grant
Pressure core barrel
Patent number
4,256,192
Issue date
Mar 17, 1981
Christensen, Inc.
James T. Aumann
E21 - EARTH DRILLING MINING
Information
Patent Grant
Dual spring drill string shock absorber
Patent number
4,186,569
Issue date
Feb 5, 1980
Christensen, Inc.
James T. Aumann
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
Information
Patent Application
System for recovering core samples under pressure
Publication number
20020033281
Publication date
Mar 21, 2002
James T. Aumann
E21 - EARTH DRILLING MINING