Patents by Inventor Amrita Haldar
Amrita Haldar 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: 11421317Abstract: A system and method for depositing a coating may comprise a coating chemical reactor, surface activation component, and a deposition component. A target surface may be prepared for deposition with the surface activation component. The coating chemical reactor may comprise a coating chemical dispenser and a coating chemical verifier that prepares the coating chemical for deposition. The coating chemical verifier may utilize an optical excitation source and at least one optical detector, wherein chemical substances are identified by unique signatures composed of binary code. The coating chemical may be received by the deposition component to depositing the coating chemical on the target surface.Type: GrantFiled: August 28, 2019Date of Patent: August 23, 2022Assignee: University of Houston SystemInventors: Seamus Curran, Nigel Alley, Kang-Shyang Liao, Amrita Haldar
-
Publication number: 20220259442Abstract: A process for manufacturing the composition coating may include selecting a wood or masonry material substrate and utilizing a sol-gel comprising a silane or silane derivative and metal oxide precursor to coat the substrate. The process may utilize an all solution process or controlled environment for manufacturing a composition coating that prevent wetting and/or staining of a substrate. The composition coatings for treating wood or masonry materials improves weather-resistance, microbial resistance, stain-resistance and fungal-resistance of the materials. The reduced permeability of the resulting masonry materials can also delay or inhibit degradation caused by permeation of ions such as chlorides and sulfates. In addition, a stain comprising the composite solution and pigments may impart additional property to wood or masonry materials whilst retaining or improving the original appearance, particularly for the visibility and contrast of the wood grain as seen after the application of the coating.Type: ApplicationFiled: April 26, 2022Publication date: August 18, 2022Applicant: University of Houston SystemInventors: Seamus Curran, Kang-Shyang Liao, Nigel Alley, Amrita Haldar, Alexander Wang
-
Patent number: 11345821Abstract: A process for manufacturing the composition coating may include selecting a wood or masonry material substrate and utilizing a sol-gel comprising a silane or silane derivative and metal oxide precursor to coat the substrate. The process may utilize an all solution process or controlled environment for manufacturing a composition coating that prevent wetting and/or staining of a substrate. The composition coatings for treating wood or masonry materials improves weather-resistance, microbial resistance, stain-resistance and fungal-resistance of the materials. The reduced permeability of the resulting masonry materials can also delay or inhibit degradation caused by permeation of ions such as chlorides and sulfates. In addition, a stain comprising the composite solution and pigments may impart additional property to wood or masonry materials whilst retaining or improving the original appearance, particularly for the visibility and contrast of the wood grain as seen after the application of the coating.Type: GrantFiled: November 12, 2015Date of Patent: May 31, 2022Assignee: University of Houston SystemInventors: Seamus Curran, Kang-Shyang Liao, Nigel Alley, Amrita Haldar, Alexander Wang
-
Patent number: 11142867Abstract: A process of fabricating the waterproof coating may include selecting a textile material substrate, utilizing a sol-gel comprising a silane or silane derivative and metal oxide precursor to coat the substrate, and optionally coating the substrate with a hydrophobic chemical agent and/or other chemical agents to create a surface with nanoscopic or microscopic features. The process may utilize an all solution process or controlled environment for fabricating a fluorine-free waterproof coating that prevent wetting or staining of a substrate, or may utilize a controlled environment. The composition coatings for treating textile materials improve soil-resistance and stain-resistance of the textile materials while the compositions contain no fluorine-based chemicals. In addition, the composite solution may impart additional properties such as physical strength to the textile whilst retaining the original appearance.Type: GrantFiled: November 12, 2015Date of Patent: October 12, 2021Assignee: UNIVERSITY OF HOUSTON SYSTEMInventors: Seamus Curran, Kang-Shyang Liao, Nigel Alley, Amrita Haldar, Alexander Wang
-
Patent number: 10741708Abstract: According to some embodiments, the present invention provides a novel photovoltaic solar cell system from photovoltaic modules that are vertically arrayed in a stack format using thin film semiconductors selected from among organic and inorganic thin film semiconductors. The stack cells may be cells that are produced in a planar manner, then vertically oriented in an angular form, also termed herein tilted, to maximize the light capturing aspects. The use of a stack configuration system as described herein allows for the use of a variety of electrode materials, such as transparent materials or semitransparent metals. Light concentration can be achieved by using fresnel lens, parabolic mirrors or derivatives of such structures. The light capturing can be controlled by being reflected back and forth in the photovoltaic system until significant quantities of the resonant light is absorbed.Type: GrantFiled: July 5, 2018Date of Patent: August 11, 2020Assignee: UNIVERSITY OF HOUSTONInventors: Seamus Curran, Sampath Dias, Kang-Shyang Liao, Soniya Devi Yambem, Amrita Haldar, Nigel Alley
-
Patent number: 10704191Abstract: A process of fabricating the composition coating may include selecting a textile material substrate, utilizing a sol-gel comprising a silane or silane derivative and metal oxide precursor to coat the substrate, and optionally coating the substrate with a hydrophobic chemical agent and/or other chemical agents to create a surface with nanoscopic or microscopic features. The process may utilize an all solution process or controlled environment for fabricating a composition coating that prevent wetting or staining of a substrate. The composition coatings for treating textile materials improve soil-resistance and stain-resistance of the textile materials. The composition coatings and their use for treating textile materials can also impart water repellency, oil repellency, ease of cleaning stains and removing particulates. In addition, the composite solution may impart additional properties such as physical strength to the textile whilst retaining the original appearance.Type: GrantFiled: November 12, 2015Date of Patent: July 7, 2020Assignee: UNIVERSITY OF HOUSTON SYSTEMInventors: Seamus Curran, Kang-Shyang Liao, Nigel Alley, Amrita Haldar, Alexander Wang
-
Patent number: 10589316Abstract: A process of fabricating the waterproof coating may include selecting a substrate, utilizing a sol-gel comprising a silane or silane derivative and metal oxide precursor to coat the substrate, and optionally coating the substrate with a hydrophobic chemical agent and/or other chemical agents to create a surface with nanoscopic or microscopic features. The process may utilize an all solution process or controlled environment for fabricating self-cleaning and waterproof coating that prevent wetting or staining of a substrate, or may utilize a controlled environment.Type: GrantFiled: May 31, 2017Date of Patent: March 17, 2020Assignee: UNIVERSITY OF HOUSTON SYSTEMInventors: Seamus Curran, Kang-Shyang Liao, Nigel Alley, Amrita Haldar, Alexander Wang, Renat Tatarin
-
Publication number: 20200063255Abstract: A system and method for depositing a coating may comprise a coating chemical reactor, surface activation component, and a deposition component. A target surface may be prepared for deposition with the surface activation component. The coating chemical reactor may comprise a coating chemical dispenser and a coating chemical verifier that prepares the coating chemical for deposition. The coating chemical verifier may utilize an optical excitation source and at least one optical detector, wherein chemical substances are identified by unique signatures composed of binary code. The coating chemical may be received by the deposition component to depositing the coating chemical on the target surface.Type: ApplicationFiled: August 28, 2019Publication date: February 27, 2020Applicant: University of Houston SystemInventors: Seamus Curran, Nigel Alley, Kang-Shyang Liao, Amrita Haldar
-
Patent number: 10435785Abstract: A system and method for depositing a coating may comprise a coating chemical reactor, surface activation component, and a deposition component. A target surface may be prepared for deposition with the surface activation component. The coating chemical reactor may comprise a coating chemical dispenser and a coating chemical verifier that prepares the coating chemical for deposition. The coating chemical verifier may utilize an optical excitation source and at least one optical detector, wherein chemical substances are identified by unique signatures composed of binary code. The coating chemical may be received by the deposition component to depositing the coating chemical on the target surface.Type: GrantFiled: June 11, 2014Date of Patent: October 8, 2019Assignee: UNIVERSITY OF HOUSTONInventors: Seamus Curran, Nigel Alley, Kang-Shyang Liao, Amrita Haldar
-
Patent number: 10170650Abstract: According to some embodiments, the present invention provides a novel photovoltaic solar cell system from photovoltaic modules that are vertically arrayed in a stack format using thin film semiconductors selected from among organic and inorganic thin film semiconductors. The stack cells may be cells that are produced in a planar manner, then vertically oriented in an angular form, also termed herein tilted, to maximize the light capturing aspects. The use of a stack configuration system as described herein allows for the use of a variety of electrode materials, such as transparent materials or semitransparent metals. Light concentration can be achieved by using fresnel lens, parabolic mirrors or derivatives of such structures. The light capturing can be controlled by being reflected back and forth in the photovoltaic system until significant quantities of the resonant light is absorbed.Type: GrantFiled: December 21, 2010Date of Patent: January 1, 2019Assignee: UNIVERSITY OF HOUSTON SYSTEMInventors: Seamus Curran, Sampath Dias, Kang-Shyang Liao, Soniya Devi Yambem, Amrita Haldar, Nigel Alley
-
Publication number: 20180315871Abstract: According to some embodiments, the present invention provides a novel photovoltaic solar cell system from photovoltaic modules that are vertically arrayed in a stack format using thin film semiconductors selected from among organic and inorganic thin film semiconductors. The stack cells may be cells that are produced in a planar manner, then vertically oriented in an angular form, also termed herein tilted, to maximize the light capturing aspects. The use of a stack configuration system as described herein allows for the use of a variety of electrode materials, such as transparent materials or semitransparent metals. Light concentration can be achieved by using fresnel lens, parabolic mirrors or derivatives of such structures. The light capturing can be controlled by being reflected back and forth in the photovoltaic system until significant quantities of the resonant light is absorbed.Type: ApplicationFiled: July 5, 2018Publication date: November 1, 2018Applicant: University of Houston SystemInventors: Seamus Curran, Sampath Dias, Kang-Shyang Liao, Soniya Devi Yambem, Amrita Haldar, Nigel Alley
-
Patent number: 10053388Abstract: Compositions and methods for improved materials and material laminates with graphitic or inorganic/organic nanomaterials are presented. Graphitic or inorganic/organic nanomaterials, such as carbon nanotubes, carbon nanofibers, graphenes or graphene oxides, are introduced into an aqueous composition as fillers to provide a graphitic or inorganic/organic nanocomposite. Such composition may be used as laminates to improve adhesion between a film and a layer of material or between layers of materials and to increase not only strength properties, but also to provide other desired properties such as electronic properties, UV absorbing/blocking, optical-limiting, anti-reflective, fire-retardant, conducting, anti-microbial properties or pigmentation to say material. By tailoring the composite formulations with multiple graphitic or organic/inorganic nanomaterials, the resulting materials laminates become multifunctional and can be used for a variety of applications.Type: GrantFiled: August 19, 2015Date of Patent: August 21, 2018Assignee: UNIVERSITY OF HOUSTON SYSTEMInventors: Seamus Curran, Nigel Alley, Kang-Shyang Liao, Amrita Haldar, Jennifer McAlpin, Brian McElhenny
-
Publication number: 20180071944Abstract: The new methods for treating green wood discuss herein speed up air drying of common green wood, including both softwood and hardwood. This method involves treating and altering the green wood with a base solution, and subjecting the wood to an air drying process. The new methods require less time to dry the green wood to a desired water content. In addition, other additives may be included in the base solution such as miscibility solvent(s), preservative(s), solubilizer(s)/stabilizer(s), chelating agent(s), bonding agent(s), pigment(s), UV protective, anti-oxidant, anti-fungal, anti-microbial and/or anti-insect chemical(s). The base solution solution may also slow down the wood deterioration caused by physical, chemical and biological sources under ambient conditions.Type: ApplicationFiled: April 1, 2016Publication date: March 15, 2018Applicant: University of Houston SystemInventors: Seamus Curran, Kang-Shyang Liao, Nigel J. Alley, Amrita Haldar, Surendra Maharjan
-
Publication number: 20180001344Abstract: A process of fabricating the waterproof coating may include selecting a substrate, utilizing a sol-gel comprising a silane or silane derivative and metal oxide precursor to coat the substrate, and optionally coating the substrate with a hydrophobic chemical agent and/or other chemical agents to create a surface with nanoscopic or microscopic features. The process may utilize an all solution process or controlled environment for fabricating self-cleaning and waterproof coating that prevent wetting or staining of a substrate, or may utilize a controlled environment.Type: ApplicationFiled: May 31, 2017Publication date: January 4, 2018Applicant: University of Houston SystemInventors: Seamus Curran, Kang-Shyang Liao, Nigel Alley, Amrita Haldar, Alexander Wang, Renat Tatarin
-
Publication number: 20170335508Abstract: A process of fabricating the composition coating may include selecting a textile material substrate, utilizing a sol-gel comprising a silane or silane derivative and metal oxide precursor to coat the substrate, and optionally coating the substrate with a hydrophobic chemical agent and/or other chemical agents to create a surface with nanoscopic or microscopic features. The process may utilize an all solution process or controlled environment for fabricating a composition coating that prevent wetting or staining of a substrate. The composition coatings for treating textile materials improve soil-resistance and stain-resistance of the textile materials. The composition coatings and their use for treating textile materials can also impart water repellency, oil repellency, ease of cleaning stains and removing particulates. In addition, the composite solution may impart additional properties such as physical strength to the textile whilst retaining the original appearance.Type: ApplicationFiled: November 12, 2015Publication date: November 23, 2017Inventors: Seamus Curran, Kang-Shyang Liao, Nigel Alley, Amrita Haldar, Alexander Wang
-
Publication number: 20170313888Abstract: A process for manufacturing the composition coating may include selecting a wood or masonry material substrate and utilizing a sol-gel comprising a silane or silane derivative and metal oxide precursor to coat the substrate. The process may utilize an all solution process or controlled environment for manufacturing a composition coating that prevent wetting and/or staining of a substrate. The composition coatings for treating wood or masonry materials improves weather-resistance, microbial resistance, stain-resistance and fungal-resistance of the materials. The reduced permeability of the resulting masonry materials can also delay or inhibit degradation caused by permeation of ions such as chlorides and sulfates. In addition, a stain comprising the composite solution and pigments may impart additional property to wood or masonry materials whilst retaining or improving the original appearance, particularly for the visibility and contrast of the wood grain as seen after the application of the coating.Type: ApplicationFiled: November 12, 2015Publication date: November 2, 2017Inventors: Seamus Curran, Kang-Shyang Liao, Nigel Alley, Amrita Haldar, Alexander Wang
-
Publication number: 20170314189Abstract: A process of fabricating the waterproof coating may include selecting a textile material substrate, utilizing a sol-gel comprising a silane or silane derivative and metal oxide precursor to coat the substrate, and optionally coating the substrate with a hydrophobic chemical agent and/or other chemical agents to create a surface with nanoscopic or microscopic features. The process may utilize an all solution process or controlled environment for fabricating a fluorine-free waterproof coating that prevent wetting or staining of a substrate, or may utilize a controlled environment. The composition coatings for treating textile materials improve soil-resistance and stain-resistance of the textile materials while the compositions contain no fluorine-based chemicals. In addition, the composite solution may impart additional properties such as physical strength to the textile whilst retaining the original appearance.Type: ApplicationFiled: November 12, 2015Publication date: November 2, 2017Inventors: Seamus Curran, Kang-Shyang Liao, Nigel Alley, Amrita Haldar, Alexander Wang
-
Publication number: 20170247288Abstract: Compositions and methods for improved materials and material laminates with graphitic or inorganic/organic nanomaterials are presented. Graphitic or inorganic/organic nanomaterials, such as carbon nanotubes, carbon nanofibers, graphenes or graphene oxides, are introduced into an aqueous composition as fillers to provide a graphitic or inorganic/organic nanocomposite. Such composition may be used as laminates to improve adhesion between a film and a layer of material or between layers of materials and to increase not only strength properties, but also to provide other desired properties such as electronic properties, UV absorbing/blocking, optical-limiting, anti-reflective, fire-retardant, conducting, anti-microbial properties or pigmentation to say material. By tailoring the composite formulations with multiple graphitic or organic/inorganic nanomaterials, the resulting materials laminates become multifunctional and can be used for a variety of applications.Type: ApplicationFiled: August 19, 2015Publication date: August 31, 2017Applicant: University of Houston SystemInventors: Seamus Curran, Nigel Alley, Kang-Shyang Liao, Amrita Haldar, Jennifer McAlpin, Brian McElhenny
-
Patent number: 9705103Abstract: In various embodiments, optoelectronic devices are described herein. The optoelectronic device may include an optoelectronic cell arranged so as to wrap around a central axis wherein the cell includes a first conductive layer, a semi-conductive layer disposed over and in electrical communication with the first conductive layer, and a second conductive layer disposed over and in electrical communication with the semi-conductive layer. In various embodiments, methods for making optoelectronic devices are described herein. The methods may include forming an optoelectronic cell while flat and wrapping the optoelectronic cell around a central axis. The optoelectronic devices may be photovoltaic devices. Alternatively, the optoelectronic devices may be organic light emitting diodes.Type: GrantFiled: June 15, 2010Date of Patent: July 11, 2017Assignee: UNIVERSITY OF HOUSTONInventors: Seamus Curran, Sampath Dias, Nigel Alley, Amrita Haldar, Soniya Devi Yambem, Liao Kang-Shyang, Prajakta Chaudhari
-
Patent number: 9694388Abstract: A process of fabricating the waterproof coating may include selecting a substrate, utilizing a sol-gel comprising a silane or silane derivative and metal oxide precursor to coat the substrate, and optionally coating the substrate with a hydrophobic chemical agent and/or other chemical agents to create a surface with nanoscopic or microscopic features. The process may utilize an all solution process or controlled environment for fabricating self-cleaning and waterproof coating that prevent wetting or staining of a substrate, or may utilize a controlled environment.Type: GrantFiled: May 14, 2014Date of Patent: July 4, 2017Assignee: UNIVERSITY OF HOUSTON SYSTEMInventors: Seamus Curran, Kang-Shyang Liao, Nigel Alley, Amrita Haldar, Alexander Wang, Renat Tatarin