Patents by Inventor Joseph Lenning Lowery
Joseph Lenning Lowery has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 11279800Abstract: The present invention concerns yarn comprising polymer, the polymer comprising imidazole groups, the yarn having a sulfur content of 0.01 to 3.0 percent by weight, based on weight of the yarn, the yarn having a tenacity of 30 cN/dtex (33.3 gpd) or higher.Type: GrantFiled: January 11, 2012Date of Patent: March 22, 2022Assignee: DUPONT SAFETY & CONSTRUCTION, INC.Inventors: Christopher William Newton, David J. Rodini, Joseph Lenning Lowery, Steven R. Allen, Vlodek Gabara
-
Patent number: 10400082Abstract: The present invention concerns fiber made from a polymer comprising imidazole groups, fiber further having: i) a halide anion, the halide anion being present in an amount of 0.05 to 20.1 weight percent, based on weight of fiber; and ii) sulfur, wherein the sulfur is present in the fiber in an amount of 0.05 to 3 weight percent; the fiber exhibiting hydrochloric acid evolution as identified by TGA-IR between 277.13° C. to 448.19° C.Type: GrantFiled: April 30, 2018Date of Patent: September 3, 2019Assignee: E I DU PONT DE NEMOURS AND COMPANYInventors: Steven R Allen, Vlodek Gabara, Joseph Lenning Lowery, Steven Raymond Lustig, Christopher William Newton, David J Rodini, Andrew J Sitter
-
Patent number: 10400357Abstract: The present invention concerns fiber made from a polymer comprising imidazole groups, the polymer further having: i) halide anions being present in an amount in the range of 0.05 to 20.1 weight percent, based on weight of fiber; ii) sulfur, wherein the sulfur is present in the fiber in an amount in the range of 0.05 to 3 weight percent, based on weight of fiber; and iii) alkali metal ion, wherein the alkali metal ion is present in the fiber in an amount in the range of 0.05 to 2 weight percent, based on weight of fiber, the fiber exhibiting hydrochloric acid evolution as identified by TGA-IR between 277.13° C. to 448.19° C.Type: GrantFiled: April 30, 2018Date of Patent: September 3, 2019Assignee: E I DU PONT DE NEMOURS AND COMPANYInventors: Steven R Allen, Vlodek Gabara, Joseph Lenning Lowery, Christopher William Newton, David J Rodini, Andrew J Sitter
-
Patent number: 10240282Abstract: The present invention concerns methods for removing sulfur from yarn comprising the steps of: a) contacting never-dried polymeric yarn with an aqueous base, the polymer comprising imidazole groups and said polymer comprising sulfur atoms characterized as being in the form of sulfate anions; b) contacting the yarn with an aqueous acid comprising a halide; and c) rinsing the yarn.Type: GrantFiled: January 11, 2012Date of Patent: March 26, 2019Assignee: E I DU PONT DE NEMOURS AND COMPANYInventors: Steven R. Allen, Vlodek Gabara, Joseph Lenning Lowery, Christopher William Newton, David J. Rodini, Andrew J. Sitter
-
Publication number: 20180245245Abstract: The present invention concerns fiber made from a polymer comprising imidazole groups, the polymer further having: i) halide anions being present in an amount in the range of 0.05 to 20.1 weight percent, based on weight of fiber; ii) sulfur, wherein the sulfur is present in the fiber in an amount in the range of 0.05 to 3 weight percent, based on weight of fiber; and iii) alkali metal ion, wherein the alkali metal ion is present in the fiber in an amount in the range of 0.05 to 2 weight percent, based on weight of fiber, the fiber exhibiting hydrochloric acid evolution as identified by TGA-IR between 277.13° C. to 448.19° C.Type: ApplicationFiled: April 30, 2018Publication date: August 30, 2018Inventors: Steven R. Allen, Vlodek Gabara, Joseph Lenning Lowery, Christopher William Newton, David J. Rodini, Andrew J. Sitter
-
Publication number: 20180244891Abstract: The present invention concerns fiber made from a polymer comprising imidazole groups, fiber further having: i) a halide anion, the halide anion being present in an amount of 0.05 to 20.1 weight percent, based on weight of fiber; and ii) sulfur, wherein the sulfur is present in the fiber in an amount of 0.05 to 3 weight percent; the fiber exhibiting hydrochloric acid evolution as identified by TGA-IR between 277.13° C. to 448.19° C.Type: ApplicationFiled: April 30, 2018Publication date: August 30, 2018Inventors: Steven R. Allen, Vlodek Gabara, Joseph Lenning Lowery, Steven Raymond Lustig, Christopher William Newton, David J. Rodini, Andrew J. Sitter
-
Patent number: 9994974Abstract: The present invention concerns fiber made from a polymer comprising imidazole groups, the polymer further having: i) halide anions being present in an amount in the range of 0.05 to 20.1 weight percent, based on weight of fiber; ii) sulfur, wherein the sulfur is present in the fiber in an amount in the range of 0.05 to 3 weight percent, based on weight of fiber; and iii) alkali metal ion, wherein the alkali metal ion is present in the fiber in an amount in the range of 0.05 to 2 weight percent, based on weight of fiber.Type: GrantFiled: January 11, 2012Date of Patent: June 12, 2018Assignee: E I DU PONT DE NEMOURS AND COMPANYInventors: Steven R. Allen, Vlodek Gabara, Joseph Lenning Lowery, Christopher William Newton, David J. Rodini, Andrew J. Sitter
-
Patent number: 9988514Abstract: The present invention concerns fiber made from a polymer comprising imidazole groups, fiber further having: i) a halide anion, the halide anion being present in an amount of 0.05 to 20.1 weight percent, based on weight of fiber; and ii) sulfur, wherein the sulfur is present in the fiber in an amount of 0.05 to 3 weight percent.Type: GrantFiled: January 11, 2012Date of Patent: June 5, 2018Assignee: E I DU PONT DE NEMOURS AND COMPANYInventors: Steven R. Allen, Vlodek Gabara, Joseph Lenning Lowery, Steven Raymond Lustig, Christopher William Newton, David J. Rodini, Andrew J. Sitter
-
Patent number: 9845553Abstract: The present invention concerns methods for removing sulfur from yarn comprising the steps of: a) contacting never-dried polymeric yarn with an aqueous base, the polymer comprising imidazole groups and said polymer comprising sulfur atoms characterized as being in the form of sulfate anions; b) contacting the yarn with an aqueous acid solution of pH 5 or lower; and c) rinsing the yarn.Type: GrantFiled: January 11, 2012Date of Patent: December 19, 2017Assignee: E I DU PONT DE NEMOURS AND COMPANYInventors: Steven R. Allen, Vlodek Gabara, Joseph Lenning Lowery, Christopher William Newton, David J. Rodini, Andrew J. Sitter
-
Patent number: 9732442Abstract: The present invention concerns methods for producing a yarn comprising the steps of: (a) producing a plurality of dope filaments by spinning a polymer solution in sulfuric acid through a multi-hole spinneret, the polymer comprising imidazole groups; (b) coagulating the plurality of dope filaments into an as-spun yarn; (c) contacting the yarn with an aqueous base having a pKa less than or equal to 11; and (d) rinsing the yarn.Type: GrantFiled: January 11, 2012Date of Patent: August 15, 2017Assignee: E I DU PONT DE NEMOURS AND COMPANYInventors: Steven R. Allen, Vlodek Gabara, Joseph Lenning Lowery, Steven Raymond Lustig, Christopher William Newton, David J. Rodini, Andrew J. Sitter
-
Patent number: 9469922Abstract: The present invention concerns methods for removing sulfur from a fiber comprising the steps of: a) contacting never-dried sulfur-containing fiber in a yarn with an aqueous base having a pKa less than or equal to 11 to release at least a portion of said sulfur, said sulfur comprising, at least in part, sulfate anions and said yarn comprising fiber derived from polymer comprising imidazole groups; and b) rinsing said yarn to remove at least a portion of released sulfur.Type: GrantFiled: January 11, 2012Date of Patent: October 18, 2016Assignee: E I DU PONT DE NEMOURS AND COMPANYInventors: Steven R. Allen, Vlodek Gabara, Joseph Lenning Lowery, Steven Raymond Lustig, Christopher William Newton, David J. Rodini, Andrew J. Sitter
-
Patent number: 9464370Abstract: The present invention concerns methods for removing sulfur from a fiber made from a polymer comprising imidazole groups, said method comprising: contacting never-dried sulfate anion-containing polymeric-fiber with an aqueous acid having a pKa of less than 5 to displace at least a portion of the sulfate anions; and b) rinsing the fiber to remove the displaced sulfate ions.Type: GrantFiled: January 11, 2012Date of Patent: October 11, 2016Assignee: E I DU PONT DE NEMOURS AND COMPANYInventors: Steven R. Allen, Vlodek Gabara, Joseph Lenning Lowery, Steven Raymond Lustig, Christopher William Newton, David J. Rodini, Andrew J. Sitter
-
Patent number: 9464380Abstract: The present invention concerns methods for removing sulfur from a fiber made from a polymer comprising imidazole groups, said method comprising: a) contacting never-dried sulfate anion-containing polymeric-fiber with an halide-containing acid to displace at least a portion of the sulfate ions with halide anions; and b) rinsing the fiber to remove the displaced sulfate ions.Type: GrantFiled: January 11, 2012Date of Patent: October 11, 2016Assignee: E I DU PONT DE NEMOURS AND COMPANYInventors: Steven R. Allen, Vlodek Gabara, Joseph Lenning Lowery, Steven Raymond Lustig, Christopher William Newton, David J. Rodini, Andrew J. Sitter
-
Patent number: 9315923Abstract: The present invention concerns processes for producing a yarn comprising polymer comprising imidazole groups, the process having the following steps: (a) spinning a solution of polymer in sulfuric acid to give rise to a plurality of dope filaments; (b) coagulating the plurality of dope filaments into a multi-filament as-spun yarn; and (c) washing the as-spun multi-filament yarn with an aqueous acid comprising a halide or an aqueous salt comprising a halide or combination thereof.Type: GrantFiled: January 11, 2012Date of Patent: April 19, 2016Assignee: E I DU PONT DE NEMOURS AND COMPANYInventors: Steven R. Allen, Vlodek Gabara, Joseph Lenning Lowery, Steven Raymond Lustig, Christopher William Newton, David J. Rodini, Andrew J. Sitter
-
Patent number: 9284665Abstract: The present invention concerns methods for removing sulfur from a fiber made from a polymer comprising imidazole groups, said method comprising: a) contacting never-dried sulfate anion containing polymeric-fiber with an aqueous salt solution comprising halide anions to displace at least a portion of the sulfate anions with halide anions; and b) rinsing the fiber to remove displaced sulfate anions.Type: GrantFiled: January 11, 2012Date of Patent: March 15, 2016Assignee: E I DU PONT DE NEMOURS AND COMPANYInventors: Christopher William Newton, David J. Rodini, Joseph Lenning Lowery, Steven R. Allen, Vlodek Gabara
-
Patent number: 9080261Abstract: The present invention concerns methods for removing sulfur from a fiber made from a polymer comprising imidazole groups, said method comprising: a) contacting never-dried sulfate anion containing polymeric-fiber with aqueous salt having monovalent anions to displace at least a portion of the sulfate anions; and b) rinsing the fiber to remove displaced sulfate anions.Type: GrantFiled: January 11, 2012Date of Patent: July 14, 2015Assignee: E I DU PONT DE NEMOURS AND COMPANYInventors: Steven R. Allen, Vlodek Gabara, Joseph Lenning Lowery, Christopher William Newton, David J. Rodini
-
Publication number: 20150073118Abstract: The present invention concerns methods for removing sulfur from a fiber made from a polymer comprising imidazole groups, said method comprising: a) contacting never-dried sulfate anion containing polymeric-fiber with an aqueous salt solution comprising halide anions to displace at least a portion of the sulfate anions with halide anions; and b) rinsing the fiber to remove displaced sulfate anions.Type: ApplicationFiled: January 11, 2012Publication date: March 12, 2015Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: Christopher William Newton, David J. Rodini, Joseph Lenning Lowery, Steven R. Allen, Vlodek Gabara
-
Publication number: 20150073119Abstract: The present invention concerns methods for removing sulfur from a fiber made from a polymer comprising imidazole groups, said method comprising: a) contacting never-dried sulfate anion containing polymeric-fiber with aqueous salt having monovalent anions to displace at least a portion of the sulfate anions; and b) rinsing the fiber to remove displaced sulfate anions.Type: ApplicationFiled: January 11, 2012Publication date: March 12, 2015Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: Steven R. Allen, Vlodek Gabara, Joseph Lenning Lowery, Christopher William Newton, David J. Rodini
-
Publication number: 20150047130Abstract: The present invention concerns methods for removing sulfur from a fiber made from a polymer comprising imidazole groups, said method comprising: contacting never-dried sulfate anion-containing polymeric-fiber with an aqueous acid having a pKa of less than 5 to displace at least a portion of the sulfate anions; and b) rinsing the fiber to remove the displaced sulfate ions.Type: ApplicationFiled: January 11, 2012Publication date: February 19, 2015Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: Steven R. Allen, Vlodek Gabara, Joseph Lenning Lowery, Steven Raymond Lustig, Christopher William Newton, David J. Rodini, Andrew J. Sitter
-
Publication number: 20150021812Abstract: The present invention concerns processes for producing a yarn comprising polymer comprising imidazole groups, the process having the following steps: (a) spinning a solution of polymer in sulfuric acid to give rise to a plurality of dope filaments; (b) coagulating the plurality of dope filaments into a multi-filament as-spun yarn; and (c) washing the as-spun multi-filament yarn with an aqueous acid comprising a halide or an aqueous salt comprising a halide or combination thereof.Type: ApplicationFiled: January 11, 2012Publication date: January 22, 2015Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: Steven R. Allen, Vlodek Gabara, Joseph Lenning Lowery, Steven Raymond Lustig, Christopher William Newton, David J. Rodini, Andrew J. Sitter