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Polymer foam process
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Patent number 4,424,287
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Issue date Jan 3, 1984
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Mobil Oil Corporation
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D. Emil Johnson
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Production of foamed polymer
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Patent number 4,352,893
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Issue date Oct 5, 1982
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Mobil Oil Corporation
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D. Emil Johnson
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Polymer foam extrusion system
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Patent number 4,344,710
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Issue date Aug 17, 1982
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Mobil Oil Corporation
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D. Emil Johnson
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL