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Flyash treatment
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Patent number 4,917,732
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Issue date Apr 17, 1990
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Shell Oil Company
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Daniel C. Baker
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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Removal of hydrogen selenide
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Patent number 4,790,945
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Issue date Dec 13, 1988
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Shell Oil Company
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Daniel C. Baker
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Catalytic sulfur degassing
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Patent number 4,755,372
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Issue date Jul 5, 1988
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Shell Oil Company
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Daniel C. Baker
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C01 - INORGANIC CHEMISTRY
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