Patents by Inventor Harry Vaughn Samuelson
Harry Vaughn Samuelson 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).
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Publication number: 20140308866Abstract: A multicomponent fiber having an exposed outer surface with the fiber having at least a first component of polyarylene sulfide polymer; and at least a second component of a thermoplastic polymer free of polyarylene sulfide polymer, wherein said thermoplastic polymer forms the entire exposed surface of the multicomponent fiber and is polymethylpentene.Type: ApplicationFiled: April 10, 2013Publication date: October 16, 2014Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: RAKESH NAMBIAR, HARRY VAUGHN SAMUELSON
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Publication number: 20140308868Abstract: A multicomponent fiber having an exposed outer surface with the fiber having at least a first component of polyarylene sulfide polymer; and at least a second component of a thermoplastic polymer free of polyarylene sulfide polymer, wherein said thermoplastic polymer forms the entire exposed surface of the multicomponent fiber and is a copolymer of norbornene with polyethylene.Type: ApplicationFiled: April 10, 2013Publication date: October 16, 2014Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: RAKESH R. NAMBIAR, Harry Vaughn Samuelson
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Publication number: 20130210307Abstract: Provided are novel compositions comprising a polyarylene sulfide and at least one tin additive comprising a branched tin(II) carboxylate selected from the group consisting of Sn(O2CR)2, Sn(O2CR)(O2CR?), Sn(O2CR)(O2CR?), and mixtures thereof, where the carboxylate moieties O2CR and O2CR? independently represent branched carboxylate anions and the carboxylate moiety O2CR? represents a linear carboxylate anion. Articles comprising the novel compositions are also provided. In addition, methods to improve the thermal stability of polyarylene sulfides, and methods to improve the thermo-oxidative stability of polyarylene sulfides, through the use of the disclosed branched tin(II) carboxylates are provided. The polyarylene sulfide compositions are useful in various applications which require superior thermal resistance, chemical resistance, and electrical insulating properties.Type: ApplicationFiled: March 22, 2011Publication date: August 15, 2013Inventors: Joachim C. Ritter, Joel M. Pollino, Michael T. Pottiger, Yefim Brun, Lakshmi Krishnamurthy, Zheng-Zheng Huang, John C. Howe, Laurie A. Howe, Harry Vaughn Samuelson, Zuohong Yin
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Publication number: 20130034658Abstract: In a first aspect the invention is a solid core fibrillation-resistant, synthetic polymeric filament having three substantially equal length convex sides. The sides through substantially rounded tips centered by a distance “a” from the axis of the filament. Each rounded tip has a radius substantially equal to a length “b”. Each tip lies on a circumscribed circle having a radius substantially equal to a length (a+b) and the midpoint of each side lies on an inscribed circle having a radius substantially equal to a length “c”. The filament has a denier-per-filament in the range 10<“dpf”<35; the distance “a” lies in the range 0.00025 inches (6 micrometers)<“a”<0.004 inches (102 micrometers); the distance “b” lies in the range from 0.00008 inches (2 micrometers)<“b”<0.001 inches (24 micrometers); the distance “c” lies in the range from 0.0003 inches (8 micrometers)<“c”<0.0025 inches (64 micrometers); and the modification ratio (“MR”) lies in the range from about 1.1<“MR”<about 2.0.Type: ApplicationFiled: August 1, 2011Publication date: February 7, 2013Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: HARRY VAUGHN SAMUELSON, Kalika Ranjan Samant, Jing-Chung Chang
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Publication number: 20130029086Abstract: In a first aspect the invention is a solid core fibrillation-resistant, synthetic polymeric filament having three substantially equal length convex sides. The sides through substantially rounded tips centered by a distance “a” from the axis of the filament. Each rounded tip has a radius substantially equal to a length “b”. Each tip lies on a circumscribed circle having a radius substantially equal to a length (a+b) and the midpoint of each side lies on an inscribed circle having a radius substantially equal to a length “c”. The filament has a denier-per-filament in the range 10<“dpf”<35; the distance “a” lies in the range 0.00025 inches (6 micrometers)<“a”<0.004 inches (102 micrometers); the distance “b” lies in the range from 0.00008 inches (2 micrometers)<“b”<0.001 inches (24 micrometers); the distance “c” lies in the range from 0.0003 inches (8 micrometers)<“c”<0.0025 inches (64 micrometers); and the modification ratio (“MR”) lies in the range from about 1.1<“MR”<about 2.0.Type: ApplicationFiled: July 29, 2011Publication date: January 31, 2013Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: HARRY VAUGHN SAMUELSON, Kalika Ranjan Samant, Jing-Chung Chang
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Publication number: 20130009333Abstract: A nonwoven web comprising bicomponent fibers. The fibers have continuous phases each of a first polyarylene sulfide (PAS) component and a polymer component. The polymer component may also be a second polyarylene sulfide. The first polyarylene sulfide component contains a tin or a zinc additive or both, and the first polyarylene sulfide component of any given fiber is at least partially exposed to the external surface of that fiber.Type: ApplicationFiled: March 17, 2011Publication date: January 10, 2013Inventors: Lakshmi Krishnamurthy, Zuohong Yin, Joachim C Ritter, Joel M Pollino, Michael T Pottiger, John C Howe, David Matthews Laura, JR., Harry Vaughn Samuelson, Robert John Duff, Zheng-Zheng Huang
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Publication number: 20130012637Abstract: An improved process for forming polyarylene sulfide fibers is provided. The process comprises forming at least one fiber from a polymer melt comprising a polyarylene sulfide and at least one tin additive comprising a branched tin(II) carboxylate. Using such a melt, the fiber forming continuity is improved compared to that of the native polyarylene sulfide melt processed under the same conditions.Type: ApplicationFiled: March 21, 2011Publication date: January 10, 2013Inventors: Joachim C. Ritter, Joel M. Pollino, Michael T. Pottiger, Lakshmi Krishnamurthy, John C. Howe, Harry Vaughn Samuelson, Marios Avgousti, Zheng-Zheng Huang, Robert John Duff
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Publication number: 20120318136Abstract: A nonwoven felt for hot gas filtration. The fibers have a polyarylene sulfide (PAS) component that contains a zinc compound. In one embodiment, the PAS comprises at least one zinc(II) salt of an organic carboxylic acid. Also a method for filtering hot gases employing a bag made from a PAS component that contains a zinc or a zinc based additive.Type: ApplicationFiled: June 15, 2011Publication date: December 20, 2012Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: ROBERT JOHN DUFF, Zheng-Zheng Jenny Huang, Lakshmi Krishnamurthy, Rakesh Nambiar, Joel M. Pollino, Joachim C. Ritter, Harry Vaughn Samuelson, Cheng-Hang Chi
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Patent number: 8093161Abstract: The invention relates to nonwoven fabrics containing polymeric multiple component fibers which include a core component and a plurality of wing components attached to the core. The polymeric core component has an elasticity that is greater than the elasticity of at least one of the wing polymeric components. The fibers assume a spiral twist configuration in which the plurality of wings substantially spiral about the core. In a preferred embodiment, the nonwoven fabrics have elastic stretch and recovery properties with a textile-like hand.Type: GrantFiled: September 27, 2002Date of Patent: January 10, 2012Assignee: INVISTA North America S.àr.l.Inventors: Vishal Bansal, Michael C. Davis, Thomas Michael Ford, Debora Flanagan Massouda, Edgar N. Rudisill, Harry Vaughn Samuelson, Hyunkook Shin, Gregory Paul Weeks
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Publication number: 20110203720Abstract: Processes for making fiber-on-end materials from multicomponent fibers and hollow fibers are provided. The fibers are arranged parallel to each other and continuously thermally fused into a ribbon or fabric, which in turn is thermally fused into a fully consolidated block of material that is skived to produce membranes or capillary arrays having narrow, well-defined pore size distributions. The skived materials are particularly useful in filtration and protective clothing applications.Type: ApplicationFiled: May 10, 2011Publication date: August 25, 2011Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Carl Bernard Arnold, Vivek Kapur, Joseph Anthony Perrotto, Harry Vaughn Samuelson
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Patent number: 7964049Abstract: Processes for making fiber-on-end materials are provided. The materials can be used to make a variety of finished articles.Type: GrantFiled: July 26, 2007Date of Patent: June 21, 2011Assignee: E. I. du Pont de Nemours and CompanyInventors: Vivek Kapur, Joseph Anthony Perrotto, Harry Vaughn Samuelson
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Publication number: 20100159186Abstract: In a first aspect the invention is a solid core fibrillation-resistant, synthetic polymeric filament having three substantially equal length convex sides. The sides through substantially rounded tips centered by a distance “a” from the axis of the filament. Each rounded tip has a radius substantially equal to a length “b”. Each tip lies on a circumscribed circle having a radius substantially equal to a length (a+b) and the midpoint of each side lies on an inscribed circle having a radius substantially equal to a length “c”. The filament has a denier-per-filament in the range 10<“dpf”<35; the distance “a” lies in the range 0.00025 inches (6 micrometers)<“a”<0.004 inches (102 micrometers); the distance “b” lies in the range from 0.00008 inches (2 micrometers)<“b”<0.001 inches (24 micrometers); the distance “c” lies in the range from 0.0003 inches (8 micrometers)<“c”<0.0025 inches (64 micrometers); and the modification ratio (“MR”) lies in the range from about 1.1<“MR”<about 2.0.Type: ApplicationFiled: December 15, 2009Publication date: June 24, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: HARRY VAUGHN SAMUELSON, Kalika Ranjan Samant, Jing-Chung Chang
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Publication number: 20100159184Abstract: In a first aspect the invention is a solid core fibrillation-resistant, synthetic polymeric filament having three substantially equal length convex sides. The sides through substantially rounded tips centered by a distance “a” from the axis of the filament. Each rounded tip has a radius substantially equal to a length “b”. Each tip lies on a circumscribed circle having a radius substantially equal to a length (a+b) and the midpoint of each side lies on an inscribed circle having a radius substantially equal to a length “c”. The filament has a denier-per-filament in the range 10<“dpf”<35; the distance “a” lies in the range 0.00025 inches (6 micrometers)<“a”<0.004 inches (102 micrometers); the distance “b” lies in the range from 0.00008 inches (2 micrometers)<“b”<0.001 inches (24 micrometers); the distance “c” lies in the range from 0.0003 inches (8 micrometers)<“c”<0.0025 inches (64 micrometers); and the modification ratio (“MR”) lies in the range from about 1.1<“MR”< about 2.0.Type: ApplicationFiled: December 18, 2008Publication date: June 24, 2010Inventors: HARRY VAUGHN SAMUELSON, Kalika Ranjan Samant, Jing-Chung Chang
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Patent number: 6989194Abstract: A flame retardant fabric comprising bicomponent fibers having a sheath and a core wherein the sheath comprises a fully aromatic thermoplastic polymer with a Limited Oxygen Index of at least 26 and the core comprises a thermoplastic polymer.Type: GrantFiled: December 16, 2003Date of Patent: January 24, 2006Assignee: E. I. du Pont de Nemours and CompanyInventors: Vishal Bansal, Hyun Sung Lim, Harry Vaughn Samuelson, Michael Robert Samuels
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Publication number: 20040253441Abstract: A flame retardant fabric comprising bicomponent fibers having a sheath and a core wherein the sheath comprises a fully aromatic thermoplastic polymer with a Limited Oxygen Index of at least 26 and the core comprises a thermoplastic polymer.Type: ApplicationFiled: December 16, 2003Publication date: December 16, 2004Inventors: Vishal Bansal, Hyun Sung Lim, Harry Vaughn Samuelson, Michael Robert Samuels
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Publication number: 20030171052Abstract: The invention relates to nonwoven fabrics containing polymeric multiple component fibers which include a core component and a plurality of wing components attached to the core. The polymeric core component has an elasticity that is greater than the elasticity of at least one of the wing polymeric components. The fibers assume a spiral twist configuration in which the plurality of wings substantially spiral about the core. In a preferred embodiment, the nonwoven fabrics have elastic stretch and recovery properties with a textile-like hand.Type: ApplicationFiled: September 27, 2002Publication date: September 11, 2003Inventors: Vishal Bansal, Michael C. Davis, Thomas Michael Ford, Debora Flanagan Massouda, Edgar N. Rudisill, Harry Vaughn Samuelson, Hyunkook Shin, Gregory Paul Weeks
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Patent number: 6426134Abstract: This invention relates to single-wall carbon nanotube/polymer composites, a process for the production of such, and their use as fibers, films and articles.Type: GrantFiled: June 29, 1999Date of Patent: July 30, 2002Assignee: E. I. du Pont de Nemours and CompanyInventors: John Gerard Lavin, Harry Vaughn Samuelson
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Patent number: 5686121Abstract: A spinneret plate for producing triangular; thermoplastic polymer filaments having 3 or 3 pair axially extending voids located along the convex sides of the filament.Type: GrantFiled: December 8, 1995Date of Patent: November 11, 1997Assignee: E. I. Du Pont de Nemours and CompanyInventor: Harry Vaughn Samuelson
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Patent number: 4035346Abstract: An antistatic synthetic polymer having a T.sub.g (NMR) of less than 25.degree. C., a log R.sub.s of less than 10 and containing phosphonium sulfonate groups can be used to improve the conductivity of synthetic fiber-forming polymers.Type: GrantFiled: October 22, 1976Date of Patent: July 12, 1977Assignee: E. I. Du Pont de Nemours and Co.Inventors: Harry Vaughn Samuelson, Gurdial Singh
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Patent number: 4006123Abstract: An antistatic synthetic polymer having a T.sub.g (NMR) of less than 25.degree. C., a log R.sub.s of less than 10 and containing phosphonium sulfonate groups can be used to improve the conductivity of synthetic fiber-forming polymers.Type: GrantFiled: February 25, 1975Date of Patent: February 1, 1977Assignee: E. I. Du Pont de Nemours and CompanyInventors: Harry Vaughn Samuelson, Gurdial Singh