Patents by Inventor Sukant Tripathy
Sukant Tripathy 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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Patent number: 7479329Abstract: Hematin, a hydroxyferriprotoporphyrin, is derivatized with one or more non-proteinaceous amphipathic groups. The derivatized hematin can serve as a mimic of horseradish peroxidase in polymerizing aromatic monomers, such as aromatic compounds. These derivatized hematins can also be used as catalysts in polymerizing aromatic monomers, and can exhibit significantly greater catalytic activity than underivatized hematin in acidic solutions. In one embodiment, polymerization is in the presence of a template, along which aromatic monomers align. An assembled hematin includes alternating layers of hematin and a polyelectrolyte, which are deposited on an electrically charged substrate. Assembled hematin can also be used to polymerize aromatic monomers.Type: GrantFiled: September 26, 2007Date of Patent: January 20, 2009Assignees: University of Massachusetts/Lowell, The United States of America as represented by the Secretary of the ArmyInventors: Susan Tripathy, legal representative, Lynne A. Samuelson, Ferdinando F. Bruno, Sucharita Roy, Ramaswamy Nagarajan, Jayant Kumar, Bon-Cheol Ku, Soo-Hyoung Lee, Sukant Tripathy
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Publication number: 20080090103Abstract: Hematin, a hydroxyferriprotoporphyrin, is derivatized with one or more non-proteinaceous amphipathic groups. The derivatized hematin can serve as a mimic of horseradish peroxidase in polymerizing aromatic monomers, such as aromatic compounds. These derivatized hematins can also be used as catalysts in polymerizing aromatic monomers, and can exhibit significantly greater catalytic activity than underivatized hematin in acidic solutions. In one embodiment, polymerization is in the presence of a template, along which aromatic monomers align. An assembled hematin includes alternating layers of hematin and a polyelectrolyte, which are deposited on an electrically charged substrate. Assembled hematin can also be used to polymerize aromatic monomers.Type: ApplicationFiled: September 26, 2007Publication date: April 17, 2008Applicants: University of Massachusetts Lowell, Government of the United States, as Represented by the Secretary of the ArmyInventors: Sukant Tripathy, Susan Tripathy, Lynne Samuelson, Ferdinando Bruno, Sucharita Roy, Ramaswamy Nagarajan, Jayant Kumar, Bon-Cheol Ku, Soo-Hyoung Lee
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Patent number: 7323635Abstract: A method of making a photovoltaic cell includes contacting a cross-linking agent with semiconductor particles, and incorporating the semiconductor particles into the photovoltaic cell.Type: GrantFiled: June 10, 2002Date of Patent: January 29, 2008Assignees: University of Massachusetts, The United States of America as represented by the Secretary of the ArmyInventors: Kethinni G. Chittibabu, Jin-An He, Lynne Ann Samuelson, Lian Li, Susan Tripathy, legal representative, Jayant Kumar, Srinivasan Balasubramanian, Sukant Tripathy, deceased
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Patent number: 7294686Abstract: Hematin, a hydroxyferriprotoporphyrin, is derivatized with one or more non-proteinaceous amphipathic groups. The derivatized hematin can serve as a mimic of horseradish peroxidase in polymerizing aromatic monomers, such as aromatic compounds. These derivatized hematins can also be used as catalysts in polymerizing aromatic monomers, and can exhibit significantly greater catalytic activity than underivatized hematin in acidic solutions. In one embodiment, polymerization is in the presence of a template, along which aromatic monomers align. An assembled hematin includes alternating layers of hematin and a polyelectrolyte, which are deposited on an electrically charged substrate. Assembled hematin can also be used to polymerize aromatic monomers.Type: GrantFiled: January 23, 2006Date of Patent: November 13, 2007Assignees: University of Massachusetts Lowell, United States of America as Represented by the Secretary of the ArmyInventors: Susan Tripathy, legal representative, Lynne A. Samuelson, Ferdinando F. Bruno, Sucharita Roy, Ramaswamy Nagarajan, Jayant Kumar, Bon-Cheol Ku, Soo-Hyoung Lee, Sukant Tripathy, deceased
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Publication number: 20070021587Abstract: Hematin, a hydroxyferriprotoporphyrin, is derivatized with one or more non-proteinaceous amphipathic groups. The derivatized hematin can serve as a mimic of horseradish peroxidase in polymerizing aromatic monomers, such as aromatic compounds. These derivatized hematins can also be used as catalysts in polymerizing aromatic monomers, and can exhibit significantly greater catalytic activity than underivatized hematin in acidic solutions. In one embodiment, polymerization is in the presence of a template, along which aromatic monomers align. An assembled hematin includes alternating layers of hematin and a polyelectrolyte, which are deposited on an electrically charged substrate. Assembled hematin can also be used to polymerize aromatic monomers.Type: ApplicationFiled: January 23, 2006Publication date: January 25, 2007Inventors: Sukant Tripathy, Susan Tripathy, Lynne Samuelson, Ferdinando Bruno, Sucharita Roy, Ramaswamy Nagarajan, Jayant Kumar, Bon-Cheol Ku, Soo-Hyoung Lee
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Publication number: 20060041110Abstract: A conductive polymer is formed enzymatically in the presence of a polynucleotide template. The method includes combining at least one redox monomer with a polynucleotide template and a redox enzyme, such as horseradish peroxidase, to form a reaction mixture. The monomer aligns along the template before or during the polymerization. Therefore, the polynucleotide template thereby affects the molecular weight and conformation of the conductive polymer. When the conductive polymer is complexed to a polynucleotide duplex, the conformation of the polynucleotide duplex can be modulated by changing the oxidation state of the conductive polymer.Type: ApplicationFiled: December 19, 2002Publication date: February 23, 2006Inventors: Lynne Samuelson, Ferdinando Bruno, Sukant Tripathy, Susan Tripathy, Ramaswamy Nagarajan, Jayant Kumar, Wei Liu
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Publication number: 20050147990Abstract: A conductive polymer is formed enzymatically in the presence of a polynucleotide template. The method includes combining at least one redox monomer with a polynucleotide template and a redox enzyme, such as horseradish peroxidase, to form a reaction mixture. The monomer aligns along the template before or during the polymerization. Therefore, the polynucleotide template thereby affects the molecular weight and conformation of the conductive polymer. When the conductive polymer is complexed to a polynucleotide duplex, the conformation of the polynucleotide duplex can be modulated by changing the oxidation state of the conductive polymer.Type: ApplicationFiled: October 5, 2004Publication date: July 7, 2005Inventors: Lynne Samuelson, Ferdinando Bruno, Sukant Tripathy, Susan Tripathy, Ramaswamy Nagarajan, Jayant Kumar, Wei Liu
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Publication number: 20050147991Abstract: A conductive polymer is formed enzymatically in the presence of a polynucleotide template. The method includes combining at least one redox monomer with a polynucleotide template and a redox enzyme, such as horseradish peroxidase, to form a reaction mixture. The monomer aligns along the template before or during the polymerization. Therefore, the polynucleotide template thereby affects the molecular weight and conformation of the conductive polymer. When the conductive polymer is complexed to a polynucleotide duplex, the conformation of the polynucleotide duplex can be modulated by changing the oxidation state of the conductive polymer.Type: ApplicationFiled: October 5, 2004Publication date: July 7, 2005Inventors: Lynne Samuelson, Ferdinando Bruno, Sukant Tripathy, Susan Tripathy, Ramaswamy Nagarajan, Jayant Kumar, Wei Liu
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Publication number: 20050084887Abstract: A conductive polymer is formed enzymatically in the presence of a polynucleotide template. The method includes combining at least one redox monomer with a polynucleotide template and a redox enzyme, such as horseradish peroxidase, to form a reaction mixture. The monomer aligns along the template before or during the polymerization. Therefore, the polynucleotide template thereby affects the molecular weight and conformation of the conductive polymer. When the conductive polymer is complexed to a polynucleotide duplex, the conformation of the polynucleotide duplex can be modulated by changing the oxidation state of the conductive polymer.Type: ApplicationFiled: October 5, 2004Publication date: April 21, 2005Inventors: Lynne Samuelson, Ferdinando Bruno, Sukant Tripathy, Susan Tripathy, Ramaswamy Nagarajan, Jayant Kumar, Wei Liu
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Publication number: 20050084888Abstract: A conductive polymer is formed enzymatically in the presence of a polynucleotide template. The method includes combining at least one redox monomer with a polynucleotide template and a redox enzyme, such as horseradish peroxidase, to form a reaction mixture. The monomer aligns along the template before or during the polymerization. Therefore, the polynucleotide template thereby affects the molecular weight and conformation of the conductive polymer. When the conductive polymer is complexed to a polynucleotide duplex, the conformation of the polynucleotide duplex can be modulated by changing the oxidation state of the conductive polymer.Type: ApplicationFiled: October 5, 2004Publication date: April 21, 2005Inventors: Lynne Samuelson, Ferdinando Bruno, Sukant Tripathy, Susan Tripathy, Ramaswamy Nagarajan, Jayant Kumar, Wei Liu
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Publication number: 20050079533Abstract: A conductive polymer is formed enzymatically in the presence of a polynucleotide template. The method includes combining at least one redox monomer with a polynucleotide template and a redox enzyme, such as horseradish peroxidase, to form a reaction mixture. The monomer aligns along the template before or during the polymerization. Therefore, the polynucleotide template thereby affects the molecular weight and conformation of the conductive polymer. When the conductive polymer is complexed to a polynucleotide duplex, the conformation of the polynucleotide duplex can be modulated by changing the oxidation state of the conductive polymer.Type: ApplicationFiled: October 5, 2004Publication date: April 14, 2005Inventors: Lynne Samuelson, Ferdinando Bruno, Sukant Tripathy, Ramaswamy Nagarajan, Jayant Kumar, Wei Liu, Susan Tripathy
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Publication number: 20040194821Abstract: A method of making a photovoltaic cell includes contacting a cross-linking agent with semiconductor particles, and incorporating the semiconductor particles into the photovoltaic cell.Type: ApplicationFiled: April 21, 2004Publication date: October 7, 2004Applicant: University of Massachusetts Lowell, a Massachusetts corporationInventors: Kethinni G. Chittibabu, Jin-An He, Lynne Ann Samuelson, Lian Li, Sukant Tripathy, Susan Tripathy, Jayant Kumar, Srinivasan Balasubramanian
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Publication number: 20040198945Abstract: Hematin, a hydroxyferriprotoporphyrin, is derivatized with one or more non-proteinaceous amphipathic groups. The derivatized hematin can serve as a mimic of horseradish peroxidase in polymerizing aromatic monomers, such as aromatic compounds. These derivatized hematins can also be used as catalysts in polymerizing aromatic monomers, and can exhibit significantly greater catalytic activity than underivatized hematin in acidic solutions. In one embodiment, polymerization is in the presence of a template, along which aromatic monomers align. An assembled hematin includes alternating layers of hematin and a polyelectrolyte, which are deposited on an electrically charged substrate. Assembled hematin can also be used to polymerize aromatic monomers.Type: ApplicationFiled: April 16, 2004Publication date: October 7, 2004Applicants: University of Massachusetts, Government of the United States, as represented by the Secretary of the ArmyInventors: Sukant Tripathy, Susan Tripathy, Lynne A. Samuelson, Ferdinando F. Bruno, Sucharita Roy, Ramaswamy Nagarajan, Jayant Kumar, Bon-Cheol Ku, Soo-Hyoung Lee
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Publication number: 20030056821Abstract: A method of making a photovoltaic cell includes contacting a cross-linking agent with semiconductor particles, and incorporating the semiconductor particles into the photovoltaic cell.Type: ApplicationFiled: June 10, 2002Publication date: March 27, 2003Inventors: Kethinni G. Chittibabu, Jin-An He, Lynne Ann Samuelson, Lian Li, Sukant Tripathy, Susan Tripathy, Jayant Kumar, Srinivasan Balasubramanian
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Publication number: 20020183470Abstract: Hematin, a hydroxyferriprotoporphyrin, is derivatized with one or more non-proteinaceous amphipathic groups. The derivatized hematin can serve as a mimic of horseradish peroxidase in polymerizing aromatic monomers, such as aromatic compounds. These derivatized hematins can also be used as catalysts in polymerizing aromatic monomers, and can exhibit significantly greater catalytic activity than underivatized hematin in acidic solutions. In one embodiment, polymerization is in the presence of a template, along which aromatic monomers align. An assembled hematin includes alternating layers of hematin and a polyelectrolyte, which are deposited on an electrically charged substrate. Assembled hematin can also be used to polymerize aromatic monomers.Type: ApplicationFiled: November 27, 2001Publication date: December 5, 2002Inventors: Sukant Tripathy, Susan Tripathy, Lynne A. Samuelson, Ferdinando F. Bruno, Sucharita Roy, Ramaswamy Nagarajan, Jayant Kumar, Bon-Cheol Ku, Soo-Hyoung Lee
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Patent number: 6153272Abstract: A polymer surface in contact with a liquid crystal medium is exposed to polarized light, whereby a covalently bound anisotropic component of the polymer surface aligns in response to the polarized light. Alignment of the anisotropic component causes alignment of the liquid crystal medium. An interference pattern of two polarized lights causes the covalently bound anisotropic component to form microgrooves on the polymer surface. A liquid crystal cell includes at least one polymer surface that has a covalently bound anisotropic component that can align in response to polarized light and a liquid crystal in contact with the polymer surface.Type: GrantFiled: May 18, 1998Date of Patent: November 28, 2000Assignee: University of Massachusetts LowellInventors: Dong-Yu Kim, Jayant Kumar, Sukant Tripathy
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Patent number: 6106948Abstract: A method for making a multilayer structure having macroscopic second order nonlinear optical properties is described. The resulting nonlinear optical structures made by the method are also described. The method includes the steps of contacting a substrate having ionic adsorption sites with a first charged polyion; ceasing contact of the substrate with the first charged polyion; and thereafter, contacting the substrate with a second charged polyion having a charge opposite to that of the first charged polyion, wherein at least one of the polyions includes a nonlinear optical chromophoric side chain.Type: GrantFiled: June 6, 1997Date of Patent: August 22, 2000Assignee: University of MassachusettsInventors: Xiaogong Wang, Srinivasan Balasubramanian, Lian Li, Sukant Tripathy, Jayant Kumar
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Patent number: 5994498Abstract: Water-soluble polymers are formed by combining a water-soluble analog of a water-insoluble monomer, such as a water-insoluble redox monomer, with a water-based solvent and an enzyme. The water-soluble polymers formed can be electrically conductive or optically active. The water-soluble analog can be copolymerized with a water-insoluble redox monomer to form a copolymer that is also water-soluble. Polymers formed by the method of this invention can be layered on a surface to form, for example, alternating layers of polyanions and polycations.Type: GrantFiled: August 21, 1997Date of Patent: November 30, 1999Assignee: Massachusetts Lowell, University of LowellInventors: Sukant Tripathy, Lynne A. Samuelson, K. Shridhara Alva, Jayant Kumar, Kenneth A. Marx
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Patent number: 5935491Abstract: The invention features a method of making a gradient-index polymer rod involving the steps of: combining a polymer with an additive, wherein the refractive index of the polymer material is different than the refractive index of the additive material; extruding the polymer and the additive into a polymer rod having a substantially uniform index of refraction profile; and immersing the rod having the substantially uniform index of refraction profile in a non-solvent under conditions and for a time that enables the non-solvent to permeate the rod and out-diffuse a portion of the additive material, thereby producing the gradient-index polymer rod. The rod produced by the method can be drawn into a graded index polymer fiber. The invention also features a gradient-index polymer rod (or fiber) of condensation-type polymer that is doped with an additive material.Type: GrantFiled: September 15, 1997Date of Patent: August 10, 1999Assignee: University of MassachusettesInventors: Sukant Tripathy, Kethinni G. Chittibabu, Jayant Kumar