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Jian C. Shen
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Houston, TX, US
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last 30 patents
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Patent Grant
Method for fully retorting an in situ oil shale retort
Patent number
4,595,056
Issue date
Jun 17, 1986
Occidental Oil Shale, Inc.
Raymond L. Zahradnik
E21 - EARTH DRILLING MINING
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Patent Grant
Method of in situ oil shale retort ignition with oxygen control
Patent number
4,448,249
Issue date
May 15, 1984
Occidental Research Corporation
Frederick M. Gragg
E21 - EARTH DRILLING MINING
Information
Patent Grant
Method for inhibiting sloughing of unfragmented formation in an in...
Patent number
4,444,256
Issue date
Apr 24, 1984
Occidental Research Corporation
Jian C. Shen
E21 - EARTH DRILLING MINING