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Extraction of hydrocarbon-containing solids
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Patent number 4,798,668
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Issue date Jan 17, 1989
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Union Oil Company of California
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Phillman N. Ho
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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Extraction of hydrocarbon-containing solids
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Patent number 4,695,373
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Issue date Sep 22, 1987
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Union Oil Company of California
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Phillman N. Ho
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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Oil shale extraction process
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Patent number 4,533,460
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Issue date Aug 6, 1985
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Union Oil Company of California
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Phillman N. Ho
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...