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Irvin D. Johnson
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Englewood, CO, US
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last 30 patents
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Patent Grant
Oil well tool for in situ release of wellbore treatment fluid
Patent number
4,809,778
Issue date
Mar 7, 1989
Marathon Oil Company
Irvin D. Johnson
E21 - EARTH DRILLING MINING
Information
Patent Grant
Method and means for introducing treatment composition into a well...
Patent number
4,790,386
Issue date
Dec 13, 1988
Marathon Oil Company
Irvin D. Johnson
E21 - EARTH DRILLING MINING
Information
Patent Grant
Method and apparatus for measuring water in crude oil
Patent number
4,644,263
Issue date
Feb 17, 1987
Marathon Oil Company
Irvin D. Johnson
G01 - MEASURING TESTING
Information
Patent Grant
Self-contained bore hole flow measurement system and method therefor
Patent number
4,581,927
Issue date
Apr 15, 1986
Marathon Oil Company
Irvin D. Johnson
E21 - EARTH DRILLING MINING
Information
Patent Grant
Flow basket
Patent number
4,576,042
Issue date
Mar 18, 1986
Marathon Oil Company
Irvin D. Johnson
E21 - EARTH DRILLING MINING
Information
Patent Grant
Cryogenic storage tank leak detection system
Patent number
4,404,843
Issue date
Sep 20, 1983
Marathon Oil Company
Irvin D. Johnson
F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information
Patent Grant
Method and apparatus for the detection of pipeline holidays
Patent number
4,390,836
Issue date
Jun 28, 1983
Marathon Oil Company
Charles R. Bruce
G01 - MEASURING TESTING
Information
Patent Grant
Well fluid velocity measurement method and system
Patent number
4,314,476
Issue date
Feb 9, 1982
Marathon Oil Company
Irvin D. Johnson
E21 - EARTH DRILLING MINING
Information
Patent Grant
Apparatus and method for controlling the rate of feeding a petroleu...
Patent number
4,176,052
Issue date
Nov 27, 1979
Marathon Oil Company
Charles R. Bruce
G05 - CONTROLLING REGULATING