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Zeolite compositions
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Patent number 5,252,345
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Issue date Oct 12, 1993
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Ethyl Corporation
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Patrick C. Hu
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Coupling process
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Patent number 4,950,831
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Issue date Aug 21, 1990
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Ethyl Corporation
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James S. Staton
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C07 - ORGANIC CHEMISTRY
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Process for making bleach activator
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Patent number 4,731,196
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Issue date Mar 15, 1988
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Ethyl Corporation
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James S. Staton
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C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...