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William J. Bartel
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Grand Junction, CO, US
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last 30 patents
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Patent Grant
Determining the locus of a processing zone in an in situ oil shale...
Patent number
4,163,475
Issue date
Aug 7, 1979
Occidental Oil Shale, Inc.
Chang Y. Cha
E21 - EARTH DRILLING MINING
Information
Patent Grant
Determining the locus of a retorting zone in an oil shale retort by...
Patent number
4,150,722
Issue date
Apr 24, 1979
Occidental Oil Shale, Inc.
Chang Y. Cha
E21 - EARTH DRILLING MINING
Information
Patent Grant
Method for establishing a combustion zone in an in situ oil shale r...
Patent number
4,147,389
Issue date
Apr 3, 1979
Occidental Oil Shale, Inc.
William J. Bartel
E21 - EARTH DRILLING MINING
Information
Patent Grant
In situ oil shale retorting process using introduction of gas at an...
Patent number
4,119,345
Issue date
Oct 10, 1978
Occidental Oil Shale, Inc.
William J. Bartel
E21 - EARTH DRILLING MINING
Information
Patent Grant
Multi-stage method of operating an in situ oil shale retort
Patent number
4,072,350
Issue date
Feb 7, 1978
Occidental Oil Shale, Inc.
William J. Bartel
E21 - EARTH DRILLING MINING
Information
Patent Grant
Method for igniting the top surface of oil shale in an in situ retort
Patent number
4,027,917
Issue date
Jun 7, 1977
Occidental Petroleum Corporation
William J. Bartel
E21 - EARTH DRILLING MINING
Information
Patent Grant
System for fuel and products of oil shale retort
Patent number
4,014,575
Issue date
Mar 29, 1977
Occidental Petroleum Corporation
Gordon B. French
E21 - EARTH DRILLING MINING