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Method for detecting membrane leakage
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Patent number 4,188,817
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Issue date Feb 19, 1980
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Standard Oil Company (Indiana)
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Edward F. Steigelmann
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Gelled hydrocarbon fuels
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Patent number 4,166,723
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Issue date Sep 4, 1979
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Standard Oil Company (Indiana)
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Edward F. Steigelmann
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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Gas separation membrane
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Patent number 4,047,908
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Issue date Sep 13, 1977
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Standard Oil Company
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Edward F. Steigelmann
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Product
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Patent number 4,039,499
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Issue date Aug 2, 1977
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Standard Oil Company
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Edward F. Steigelmann
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D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
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Membrane process and product
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Patent number 4,014,665
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Issue date Mar 29, 1977
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Standard Oil Company (Indiana)
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Edward F. Steigelmann
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C07 - ORGANIC CHEMISTRY
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Process for forming hollow fibers
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Patent number 3,940,469
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Issue date Feb 24, 1976
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Standard Oil Company
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Edward F. Steigelmann
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D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING