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| US3996321 | 26 Nov 1974 | 7 Dic 1976 | E. I. Du Pont de Nemours and Company | Level control of dry-jet wet spinning process |
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| US4029835 | 14 Ene 1976 | 14 Jun 1977 | Mitsubishi Rayon Co., Ltd. | Heat resistant sheet |
| US4048279 | 25 Jun 1975 | 13 Sep 1977 | E. I. Du Pont de Nemours and Company | Washing process for inorganic acid containing polyamide fibers |
| US4070326 | 18 Dic 1975 | 24 Ene 1978 | E. I. Du Pont de Nemours and Company | Anisotropic sulfuric acid dopes of polyamide hydrazides |
| US4082731 | 29 Dic 1975 | 4 Abr 1978 | Avtex Fibers Inc. | Method for producing a high modulus polyester yarn |
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| US4115503 | 4 Nov 1974 | 19 Sep 1978 | Monsanto Company | Novel process for the preparation of fiber of arylene oxadiazole/arylene N-alkylhydrazide copolymer |
| US4144023 | 11 Oct 1977 | 13 Mar 1979 | E. I. Du Pont de Nemours and Company | Dyeing of high strength, high modules aromatic polyamide fibers |
| US4291142 | 6 Jul 1979 | 22 Sep 1981 | Teijin, Limited | Crosslinked aromatic polyamide film and process for producing the same |
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| US4477526 | 18 Jun 1982 | 16 Oct 1984 | E. I. Du Pont de Nemours and Company | High strength aramid spun yarn |
| US4500278 | 22 Abr 1983 | 19 Feb 1985 | E. I. Du Pont de Nemours and Company | Yarn heat treatment apparatus |
| US4698414 | 16 Sep 1986 | 6 Oct 1987 | E. I. Du Pont de Nemours and Company | Copoly(p-phenylene terephthalamide/2,6-naphthalamide)aramid yarn |
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| US4729921 | 17 Sep 1985 | 8 Mar 1988 | E. I. Du Pont de Nemours and Company | High density para-aramid papers |
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| US4847354 | 20 Mar 1986 | 11 Jul 1989 | Hoechst Aktiengesellschaft | Shaped structure of aromatic copolyamide from aromatic diamine mixture |
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| US4859393 | 2 Mar 1988 | 22 Ago 1989 | E. I. Du Pont de Nemours and Company | Method of preparing poly (p-phenyleneterephthalamide) yarns of improved fatigue resistance |
| US4869860 | 9 Ago 1984 | 26 Sep 1989 | E. I. Du Pont De Nemours and Company | Spinning process for aromatic polyamide filaments |
| US4898704 | 30 Ago 1988 | 6 Feb 1990 | E. I. Du Pont De Nemours & Co. | Coagulating process for filaments |
| US4965033 | 26 Mar 1990 | 23 Oct 1990 | E. I. du Pont de Nemours and Company | Process for spinning high-strength, high-modulus aromatic polyamides |
| US4971539 | 21 Jun 1989 | 20 Nov 1990 | E. I. du Pont de Nemours and Company | Device for coagulating filaments |
| US4985193 | 21 Feb 1989 | 15 Ene 1991 | E. I. du Pont de Nemours and Company | Aramid yarn process |
| US4987215 | 16 Oct 1989 | 22 Ene 1991 | Hoechst Aktiengesellschaft | Wholly aromatic polyamide, process for preparing same and structure thereof. |
| US4987216 | 16 Oct 1989 | 22 Ene 1991 | Hoechst Aktiengesellschaft | Wholly aromatic polyamide |
| US4987217 | 16 Oct 1989 | 22 Ene 1991 | Hoechst Aktiengesellschaft | Wholly aromatic polyamide |
| US4994323 | 1 Ago 1988 | 19 Feb 1991 | E. I. Du Pont de Nemours and Company | Colored aramid fibers |
| US5000898 | 13 Abr 1989 | 19 Mar 1991 | E. I. Du Pont de Nemours and Company | Process for making oriented, shaped articles of lyotropic polysaccharide/thermally-consolidatable polymer blends |
| US5003036 | 10 May 1989 | 26 Mar 1991 | E. I. Du Pont de Nemours | Yarn with improved hydrolytic stability from aromatic polyamide comprising chloroterephthalamide units |
| US5023035 | 21 Feb 1989 | 11 Jun 1991 | E. I. Du Pont de Nemours and Company | Cyclic tensioning of never-dried yarns |
| US5025537 | 24 May 1990 | 25 Jun 1991 | E. I. Du Pont de Nemours and Company | Process for making preshrunk size-free denim |
| US5028372 | 5 Jun 1989 | 2 Jul 1991 | E. I. Du Pont de Nemours and Company | Method for producing para-aramid pulp |
| US5037596 | 28 Nov 1989 | 6 Ago 1991 | E. I. Du Pont de Nemours and Company | Process for making fibers with improved hydrolytic stability |
| US5073581 | 7 Mar 1991 | 17 Dic 1991 | E. I. Du Pont de Nemours and Company | Spinnable dopes for making oriented, shaped articles of lyotropic polysaccharide/thermally-consolidatable polymer blends |
| US5091456 | 30 Ago 1990 | 25 Feb 1992 | E. I. du Pont de Nemours and Company | Aramid fiber of improved hydrolytic stability |
| US5094913 | 8 Mar 1990 | 10 Mar 1992 | E. I. Du Pont de Nemours and Company | Oriented, shaped articles of pulpable para-aramid/meta-aramid blends |
| US5106560 | 9 Ago 1990 | 21 Abr 1992 | E. I. Du Pont de Nemours and Company | Producing para-aramid pulp by means of gravity-induced shear forces |
| US5114652 | 11 Oct 1990 | 19 May 1992 | E. I. du Pont de Nemours and Company | Process for making colored aramid fibers |
| US5135687 | 30 Oct 1990 | 4 Ago 1992 | E. I. Du Pont de Nemours and Company | Process for making PVP/para-aramid fibers |
| US5137768 | 16 Jul 1990 | 11 Ago 1992 | E. I. Du Pont de Nemours and Company | High shear modulus aramid honeycomb |
| US5182067 | 6 Jun 1991 | 26 Ene 1993 | E. I. Du Pont de Nemours and Company | Process of making fibers of sulfonated poly(p-phenylene terephthalamide) |
| US5232461 | 28 May 1992 | 3 Ago 1993 | E. I. du Pont de Nemours and Company | Method of dyeing aromatic polyamide fibers with water-soluble dyes |
| US5234651 | 12 Sep 1991 | 10 Ago 1993 | | Dry-jet wet spinning of fibers including two steps of stretching before complete coagulation |
| US5252284 | 8 Ene 1992 | 12 Oct 1993 | Lenzing Aktiengesellschaft | Method of producing shaped cellulosic articles |
| US5302334 | 21 May 1992 | 12 Abr 1994 | The Dow Chemical Company | Process for coagulating and washing lyotropic polybenzazole films |
| US5302451 | 30 Sep 1992 | 12 Abr 1994 | E. I. Du Pont de Nemours and Company | Fibers of sulfonated poly(p-phenylene terephthalmide) |
| US5330698 | 19 Abr 1993 | 19 Jul 1994 | E. I. Du Pont de Nemours and Company | Process for making high elongation PPD-T fibers |
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| US5336734 | 19 Abr 1993 | 9 Ago 1994 | E. I. Du Pont de Nemours and Company | Textile fibers of sulfonated poly(p-phenylene terephthalamide) |
| US5366781 | 5 Jun 1992 | 22 Nov 1994 | E. I. Du Pont de Nemours and Company | Oriented, shape articles of lyotropic/thermally-consolidatable polymer blends |
| US5393477 | 1 Oct 1993 | 28 Feb 1995 | E. I. Du Pont de Nemours and Company | Air gap spinning process for aramids |
| US5399382 | 14 May 1993 | 21 Mar 1995 | E. I. Du Pont de Nemours and Company | Electroless plated aramid surfaces |
| US5525638 | 12 Jul 1995 | 11 Jun 1996 | The Dow Chemical Company | Process for the preparation of polybenzazole filaments and fibers |
| US5581998 | 8 Nov 1995 | 10 Dic 1996 | | Biomass fuel turbine combuster |
| US5582911 | 19 Ago 1994 | 10 Dic 1996 | Michelin Recherche et. Technique, S.A. | Aramid monofilament having a slightly structured skin--process for producing this monofilament |
| US5618483 | 6 Jun 1995 | 8 Abr 1997 | Fraunhofer Gesellschaft Petentabteilung | Process of making flexible cellulose fibers |
| US5660779 | 24 Oct 1995 | 26 Ago 1997 | E. I. Du Pont de Nemours and Company | Process of making textile fibers of sulfonated poly(p-phenylene terephthalamide) |
| US5666890 | 7 Jun 1995 | 16 Sep 1997 | | Biomass gasification system and method |
| US5679758 | 30 Mar 1995 | 21 Oct 1997 | Industrial Technology Research Institute | Method for producing shaped articles of soluble wholly aromatic polyamides |
| US5702547 | 5 Jun 1995 | 30 Dic 1997 | Michelin Recherche et Technique, S.A. | Article reinforced by aramid monofilament having a slightly structured skin |
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| US6427736 | 16 Abr 1999 | 6 Ago 2002 | Michelin et Cie | Cellulose fiber for tire |
| US6592987 | 7 Mar 2000 | 15 Jul 2003 | E. I. du Pont de Namours and Company | Wholly aromatic synthetic fiber produced by liquid-crystal spinning, process for producing the same, and use thereof |
| US6626963 | 21 Sep 2001 | 30 Sep 2003 | E. I. du Pont de Nemours and Company | Process for restoring the appearance of pigmented or dyed para-aramid fabric |
| US6669741 | 21 Sep 2001 | 30 Dic 2003 | E. I. du Pont de Nemours and Company | Process for restoring the natural appearance of para-aramid clothing |
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| US6919416 | 9 Feb 2004 | 19 Jul 2005 | E. I. du Pont de Nemours and Company | Acetoacetylated polyvinyl polymers |
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| US7015288 | 4 Mar 2005 | 21 Mar 2006 | E.I. du Pont de Nemours and Company | Acetoacetylated polyvinyl polymers |
| US7029618 | 4 Mar 2005 | 18 Abr 2006 | E.I. duPont de Nemours and Company | Acetoacetylated polyvinyl polymers |
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| US7156883 | 26 Jul 2004 | 2 Ene 2007 | E. I. du Pont de Nemours and Company | Lightweight protective apparel |
| US7226877 | 27 Dic 2004 | 5 Jun 2007 | E. I. du Pont de Nemours and Company | Liquid water impermeable reinforced nonwoven fire blocking fabric, method for making such fabric, and articles fire blocked therewith |
| US7229937 | 23 Mar 2004 | 12 Jun 2007 | E. I. du Pont de Nemours and Company | Reinforced nonwoven fire blocking fabric, method for making such fabric, and articles fire blocked therewith |
| US7247585 | 23 Nov 2004 | 24 Jul 2007 | E.I. du Pont de Nemours and Company | Reinforced nonwoven fire blocking fabric having ridges and grooves and articles fire blocked therewith |
| US7358203 | 10 Oct 2006 | 15 Abr 2008 | E.I. du Pont de Nemours and Company | Stain-masking cut resistant fabrics and articles and processes for making same |
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| US7425368 | 12 Jul 2005 | 16 Sep 2008 | Massachusetts Institute of Technology | Filler-enhanced polymeric fibers with improved mechanical properties and method for making |
| US7455750 | 25 Jun 2004 | 25 Nov 2008 | E.I. du Pont de Nemours and Company | Meta- and para-aramid pulp and processes of making same |
| US7465781 | 13 Jul 2005 | 16 Dic 2008 | E.I. du Pont de Nemours & Company | Method for making polybenzobisoxazole containing polymer |
| US7465782 | 13 Jul 2005 | 16 Dic 2008 | E.I Du Pont De Nemours & Company | Method for making polybenzobisoxazole containing fiber |
| US7470990 | 23 Mar 2005 | 30 Dic 2008 | Endicott Interconnect Technologies, Inc. | Low moisture absorptive circuitized substrate with reduced thermal expansion, method of making same, electrical assembly utilizing same, and information handling system utilizing same |
| US7521493 | 10 Ene 2005 | 21 Abr 2009 | E. I. du Pont de Nemours and Company | Slurries containing microfiber and micropowder, and methods for using and making same |
| US7531113 | 26 May 2005 | 12 May 2009 | E.I. du Pont de Nemours and Company | Abrasion resistant fluoropolymer compositions containing micropulp |
| US7537830 | 22 Ago 2007 | 26 May 2009 | E.I. du Pont de Nemours and Company | Flame resistant spun staple yarns made from blends of fibers derived from diamino diphenyl sulfone, low thermal shrinkage fibers, flame resistant fibers, and antistatic fibers and fabrics and garments made therefrom and methods for making same |
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| US7683157 | 27 Mar 2006 | 23 Mar 2010 | E.I. du Pont de Nemours and Company
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| US7767599 | 10 Oct 2006 | 3 Ago 2010 | E.I. du Pont de Nemours and Company | Multidenier fiber cut resistant fabrics and articles |
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| US7771810 | 15 Dic 2006 | 10 Ago 2010 | E.I. du Pont de Nemours and Company | Honeycomb from paper having a high melt point thermoplastic fiber |
| US7771811 | 15 Dic 2006 | 10 Ago 2010 | E.I. du Pont de Nemours and Company | Honeycomb from controlled porosity paper |
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