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Manufacture of Portland cement
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Patent number 4,089,697
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Issue date May 16, 1978
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The Associated Portland Cement Manufacturers Limited
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Anthony Robin Pennell
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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Portland cement manufacture
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Patent number 4,081,285
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Issue date Mar 28, 1978
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The Associated Portland Cement Manufacturers Limited
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Anthony Robin Pennell
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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Collateral drying process
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Patent number 4,080,219
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Issue date Mar 21, 1978
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The Associated Portland Cement Manufacturers Limited
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Anthony Robin Pennell
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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Integrated reaction process
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Patent number 4,052,148
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Issue date Oct 4, 1977
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The Associated Portland Cement Manufacturers Limited
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Anthony Robin Pennell
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES