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Extrusion die assembly
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Patent number 6,409,491
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Issue date Jun 25, 2002
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E. I. Du Pont de Nemours and Company
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Kenneth Wayne Leffew
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Production of poly(trimethylene terephthalate)
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Patent number 5,990,265
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Issue date Nov 23, 1999
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E. I. Du Pont de Nemours and Company
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Elwood Neal Blanchard
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Production of poly (ethylene terephthalate)
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Patent number 5,830,982
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Issue date Nov 3, 1998
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E. I. Du Pont de Nemours and Company
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Jan M. Stouffer
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Production of poly(ethylene terephthalate)
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Patent number 5,714,262
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Issue date Feb 3, 1998
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E. I. Du Pont de Nemours and Company
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Jan M. Stouffer
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Production of poly(ethylene terephthalate)
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Patent number 5,532,333
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Issue date Jul 2, 1996
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E. I. Du Pont de Nemours and Company
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Jan M. Stouffer
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Production of poly(ethylene terephthalate)
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Patent number 5,510,454
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Issue date Apr 23, 1996
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E. I. Du Pont de Nemours and Company
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Jan M. Stouffer
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Free surface casting method
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Patent number 4,810,527
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Issue date Mar 7, 1989
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E. I. Du Pont Nemours and Company
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James E. Geary
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G11 - INFORMATION STORAGE
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Edge thickness control system
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Patent number 4,804,556
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Issue date Feb 14, 1989
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E. I. Du Pont de Nemours and Company
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Kenneth W. Leffew
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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