Patents by Inventor Hyacinth L. Lechuga
Hyacinth L. Lechuga 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: 20240066473Abstract: The present disclosure provides an article including an isoporous membrane disposed on a porous substrate. The iso-porous membrane includes a triblock copolymer or a pentablock copolymer. The isoporous membrane has a thickness and is isoporous throughout its thickness. A method of making an article is also provided, which does not require a solvent exchange process. The method includes depositing a composition on a porous substrate, thereby forming a fdm, and removing at least a portion of the solvent from the film, thereby forming an isoporous membrane having numerous pores. The composition contains a solvent and solids including a triblock copolymer or a pentablock copolymer. The article advantageously can be hydrophilic and provides sharp molecular weight cut-offs and high flux.Type: ApplicationFiled: December 8, 2020Publication date: February 29, 2024Inventors: Clinton P. Waller, Jr., Michelle M. Mok, Lucas D. McIntosh, Timothy M. Gillard, Carl A. Laskowski, Hyacinth L. Lechuga
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Publication number: 20240001415Abstract: Films and articles are described comprising a microstructured surface having an array of peak structures and adjacent valleys. For improved cleanability, the valleys preferably have a maximum width ranging from 10 microns to 250 microns and the peak structures have a side wall angle greater than 10 degrees. The peak structures may comprise two or more facets such as in the case of a linear array of prisms or an array of cube-corners elements. The facets form continuous or semi-continuous surfaces in the same direction. The valleys typically lack intersecting walls. Also described are methods of making and methods of use. The microstructured surface of the article can be prepared by various microreplication techniques such as coating, injection molding, embossing, laser etching, extrusion, casting and curing a polymerizable resin; and bonding microstructured film to a surface or article with an adhesive.Type: ApplicationFiled: January 25, 2022Publication date: January 4, 2024Inventors: Jodi L. Connell, Raymond P. Johnston, John J. Sullivan, Karl J.L. Geisler, Vivian W. Jones, Gordon A. Kuhnley, Patrick G. Zimmerman, Bradley W. Eaton, Kurt J. Halverson, Brian W. Lueck, Alexandr C. Eldredge, Hyacinth L. Lechuga, Lynn E. Lorimor, Diane R. Wolk, Junia M. Pereira, Caroline M. Yitalo, Linda W. Suszko, Daniel J. Rogers, Bryon A. Mrrill
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Publication number: 20230405915Abstract: Films and articles are described comprising a microstructured surface having an array of peak structures and adjacent valleys. For improved cleanability, the valleys preferably have a maximum width ranging from 10 microns to 250 microns and the peak structures have a side wall angle greater than 10 degrees. The peak structures may comprise two or more facets such as in the case of a linear array of prisms or an array of cube-corners elements. The facets form continuous or semi-continuous surfaces in the same direction. The valleys typically lack intersecting walls. Also described are methods of making and methods of use. The microstructured surface of the article can be prepared by various microreplication techniques such as coating, injection molding, embossing, laser etching, extrusion, casting and curing a polymerizable resin; and bonding microstructured film to a surface or article with an adhesive.Type: ApplicationFiled: August 10, 2023Publication date: December 21, 2023Inventors: Jodi L. Connell, Raymond P. Johnston, John J. Sullivan, Karl J.L. Geisler, Vivian W. Jones, Gordon A. Kuhnley, Patrick G. Zimmerman, Bradley W. Eaton, Kurt J. Halverson, Brian W. Lueck, Alexander C. Eldredge, Hyacinth L. Lechuga
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Patent number: 11826779Abstract: Wet-on-wet coating processes are provided to produce multilayer articles. First and second coating materials are sequentially applied on to a structured substrate surface to form a skin layer directly over the structured substrate surface and a bulk layer over the skin layer. The conformability of the skin layer can be adjusted to provide desired surface and bulk properties.Type: GrantFiled: December 24, 2020Date of Patent: November 28, 2023Assignee: 3M Innovative Properties CompanyInventors: Brittni M. Schiewer, Eric A. Vandre, Chris A. Pommer, Kara A. Meyers, Anish Kurian, Michelle Ji, Hyacinth L Lechuga, Ross E. Behling, Dong-Wei Zhu, Robert B. Secor, Mikhail L. Pekurovsky
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Patent number: 11766822Abstract: Films and articles are described comprising a microstructured surface having an array of peak structures and adjacent valleys. For improved cleanability, the valleys preferably have a maximum width ranging from 10 microns to 250 microns and the peak structures have a side wall angle greater than 10 degrees. The peak structures may comprise two or more facets such as in the case of a linear array of prisms or an array of cube-corners elements. The facets form continuous or semi-continuous surfaces in the same direction. The valleys typically lack intersecting walls. Also described are methods of making and methods of use. The microstructured surface of the article can be prepared by various microreplication techniques such as coating, injection molding, embossing, laser etching, extrusion, casting and curing a polymerizable resin; and bonding microstructured film to a surface or article with an adhesive.Type: GrantFiled: February 23, 2021Date of Patent: September 26, 2023Assignee: 3M Innovative Properties CompanyInventors: Jodi L. Connell, Raymond P. Johnston, John J. Sullivan, Karl J. L. Geisler, Vivian W. Jones, Gordon A. Kuhnley, Patrick G. Zimmerman, Bradley W. Eaton, Kurt J. Halverson, Brian W. Lueck, Alexander C. Eldredge, Hyacinth L. Lechuga
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Publication number: 20230158557Abstract: Medical diagnostic devices or components thereof are described that comprise a microstructured surface that comprises peak structures and adjacent valleys wherein the valleys have a maximum width ranging from 1 to 1000 microns and the peak structures. In some embodiments (e.g. for improved cleanability) the peak structures of the microstructured surface have a side wall angle of greater than 10 degrees. The peak structures may comprise two or more facets such as in the case of a linear array of prisms or an array of cube-comers elements. The microstructured surface of the medical diagnostic device typically comes in contact with multiple patients during normal use of the device, such as a stethoscope diaphragm. The microstructured surface exhibits better microorganism (e.g. bacteria) removal when cleaned and/or provides a reduction in microbial touch transfer. Also described are methods of making and methods of use.Type: ApplicationFiled: May 14, 2021Publication date: May 25, 2023Inventors: Jodi L. Connell, Raymond P. Johnston, Daniel J. Rogers, John J. Sullivan, Gordon A. Kuhnley, Brian W. Lueck, Alexander C. Eldredge, Kurt J. Halverson, Hyacinth L. Lechuga
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Publication number: 20230057006Abstract: Wet-on-wet coating processes are provided to produce multilayer articles. First and second coating materials are sequentially applied on to a structured substrate surface to form a skin layer directly over the structured substrate surface and a bulk layer over the skin layer. The conformability of the skin layer can be adjusted to provide desired surface and bulk properties.Type: ApplicationFiled: December 24, 2020Publication date: February 23, 2023Inventors: Brittni M. Schiewer, Eric A. Vandre, Chris A. Pommer, Kara A. Meyers, Anish Kurian, Michelle Ji, Hyacinth L. Lechuga, Ross E. Behling, Dong-Wei Zhu, Robert B. Secor, Mikhail L. Pekurovsky
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Publication number: 20220088546Abstract: A porous membrane, The porous membrane includes a triblock copolymer of the formula ABC, the porous membrane comprising a plurality of pores; wherein the A block has a Tg of 90 degrees Celsius or greater and is present in an amount ranging from 30% to 80% by weight, inclusive, of the total block copolymer; wherein the B block has a Tg of 25 degrees Celsius or less and is present in an amount ranging from 10% to 40% by weight, inclusive, of the total block copolymer and wherein the C block is a water miscible hydrogen-bonding block immiscible with each of the A block and the B block; wherein the porous membrane comprising a first major surface and an opposed second major surface, wherein the first major surface is a nanostructured surface.Type: ApplicationFiled: March 24, 2020Publication date: March 24, 2022Inventors: Michelle M. Mok, Timothy M. Gillard, Carl A. Laskowski, Lucas D. McIntosh, Hyacinth L. Lechuga
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Publication number: 20210403626Abstract: Curable compositions include at least one fluoropolymer, at least one monofunctional (meth)acrylate, at least one difunctional (meth)acrylate, and at least one initiator. The curable composition, when cured, forms an optically-scattering layer including a matrix and phase separated microdomains. The matrix and the phase separated microdomains have different refractive indices, and the microdomains are on the order of or larger than the wavelengths of visible light.Type: ApplicationFiled: August 13, 2019Publication date: December 30, 2021Inventors: Evan L. Schwartz, Mark J. Pellerite, Brett J. Sitter, Liang Gong, Hyacinth L. Lechuga
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Patent number: 11167251Abstract: The present disclosure provides a porous membrane made of pentablock copolymer. The porous membrane includes an ABCBA block copolymer and has a number of pores. The A block is immiscible with each of the B block and the C block, the B block has a glass transition temperature (Tg) of 90 degrees Celsius or greater, and the C block has a Tg of 25 degrees Celsius or less. The A block comprises a poly(alkylene oxide), a substituted epoxide, a polylactam, or a substituted carbonate; B block comprises a vinyl aromatic monomer or a polyalkylmethacrylate and C block comprises a polyacrylate, a polysiloxane or a polyisoprene. A method of making a porous membrane is also provided. The method includes forming a film or a hollow fiber from a solution including a solvent and solids containing an ABCBA block copolymer. The method further includes removing at least a portion of the solvent from the film or the hollow fiber and contacting the film or the hollow fiber with a nonsolvent.Type: GrantFiled: November 14, 2017Date of Patent: November 9, 2021Assignee: 3M Innovative Properties CompanyInventors: Michelle M. Mok, Carl A. Laskowski, Lucas D. McIntosh, Hyacinth L. Lechuga, Timothy M. Gillard, Clinton P. Waller, Jr.
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Publication number: 20210187819Abstract: Films and articles are described comprising a microstructured surface having an array of peak structures and adjacent valleys. For improved cleanability, the valleys preferably have a maximum width ranging from 10 microns to 250 microns and the peak structures have a side wall angle greater than 10 degrees. The peak structures may comprise two or more facets such as in the case of a linear array of prisms or an array of cube-corners elements. The facets form continuous or semi-continuous surfaces in the same direction. The valleys typically lack intersecting walls. Also described are methods of making and methods of use. The microstructured surface of the article can be prepared by various microreplication techniques such as coating, injection molding, embossing, laser etching, extrusion, casting and curing a polymerizable resin; and bonding microstructured film to a surface or article with an adhesive.Type: ApplicationFiled: February 23, 2021Publication date: June 24, 2021Inventors: Jodi L. Connell, Raymond P. Johnston, John J. Sullivan, Karl J.L. Geisler, Vivian W. Jones, Gordon A. Kuhnley, Patrick G. Zimmerman, Bradley W. Eaton, Kurt J. Halverson, Brian W. Lueck, Alexander C. Eldredge, Hyacinth L. Lechuga
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Patent number: 10756306Abstract: A nanostructured article having a first layer with a nanostructured surface is described. The nanostructured surface includes a plurality of pillars extending from a base surface of the first layer. The pillars have an average height greater than an average lateral dimension of the pillars. An average center-to-center spacing between pillars is no more than 2000 nm. The average lateral dimension is no less than 50 nm. Each pillar in the plurality of pillars has at least a lower portion and an upper portion where the lower portion is between the upper portion and the base surface, and the upper and lower portions have differing compositions. The nanostructured article includes a second layer disposed over the plurality of pillars and extending continuously to the base surface.Type: GrantFiled: October 17, 2017Date of Patent: August 25, 2020Assignee: 3M Innovative Properties CompanyInventors: Nicholas C. Erickson, Moses M. David, Xiaoguang Sun, Manoj Nirmal, Haeen Sykora, Hui Luo, Samuel J. Carpenter, Jilliann M. Nelson, Justin P. Meyer, Bert T. Chien, David J. Rowe, Robert L. Brott, David G. Freier, Hyacinth L. Lechuga
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Publication number: 20200047135Abstract: The present disclosure provides a porous membrane made of pentablock copolymer. The porous membrane includes an ABCBA block copolymer and has a number of pores. The A block is immiscible with each of the B block and the C block, the B block has a glass transition temperature (Tg) of 90 degrees Celsius or greater, and the C block has a Tg of 25 degrees Celsius or less. The A block comprises a poly(alkylene oxide), a substituted epoxide, a polylactam, or a substituted carbonate; B block comprises a vinyl aromatic monomer or a polyalkylmethacrylate and C block comprises a polyacrylate, a polysiloxane or a polyisoprene. A method of making a porous membrane is also provided. The method includes forming a film or a hollow fiber from a solution including a solvent and solids containing an ABCBA block copolymer. The method further includes removing at least a portion of the solvent from the film or the hollow fiber and contacting the film or the hollow fiber with a nonsolvent.Type: ApplicationFiled: November 14, 2017Publication date: February 13, 2020Inventors: Michelle M. Mok, Carl A. Laskowski, Lucas D. McIntosh, Hyacinth L. Lechuga, Timothy M. Gillard, Clinton P. Waller, JR.
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Publication number: 20190386251Abstract: A nanostructured article having a first layer with a nanostructured surface is described. The nanostructured surface includes a plurality of pillars extending from a base surface of the first layer. The pillars have an average height greater than an average lateral dimension of the pillars. An average center-to-center spacing between pillars is no more than 2000 nm. The average lateral dimension is no less than 50 nm. Each pillar in the plurality of pillars has at least a lower portion and an upper portion where the lower portion is between the upper portion and the base surface, and the upper and lower portions have differing compositions. The nanostructured article includes a second layer disposed over the plurality of pillars and extending continuously to the base surface.Type: ApplicationFiled: October 17, 2017Publication date: December 19, 2019Inventors: Nicholas C. Erickson, Moses M. David, Xiaoguang Sun, Manoj Nirmal, Haeen Sykora, Hui Luo, Samuel J. Carpenter, Jilliann M. Nelson, Justin P. Meyer, Bert T. Chien, David J. Rowe, Robert L. Brott, David G. Freier, Hyacinth L. Lechuga
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Patent number: 10312001Abstract: A composite layer including first and second layers is described. The first layer includes a plurality of metallic nanowires and the second layer includes a polymeric overcoat disposed on the nanowires. In top plan view, the composite layer has at least one first region and at least one second region, where the nanowires in each first region form an interconnected network of the nanowires, and each second region includes a plurality of nanotrenches through the second layer into the first layer.Type: GrantFiled: June 12, 2017Date of Patent: June 4, 2019Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Mark J. Pellerite, Seth M. Kirk, Hyacinth L. Lechuga
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Patent number: 10213993Abstract: Described herein is composite article comprising a substrate; and on at least one face of the substrate a multilayered coating disposed thereon.Type: GrantFiled: December 16, 2014Date of Patent: February 26, 2019Assignee: 3M Innovative Properties CompanyInventors: Kui Chen-Ho, Caroline M. Ylitalo, Yu Yang, Yongshang Lu, Alan L. Levin, Hyacinth L. Lechuga, Steven H. Kong, Suresh S. Iyer, Ingrid N. Haugan, Mahfuza B. Ali
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Publication number: 20170278594Abstract: A composite layer including first and second layers is described. The first layer includes a plurality of metallic nanowires and the second layer includes a polymeric overcoat disposed on the nanowires. In top plan view, the composite layer has at least one first region and at least one second region, where the nanowires in each first region form an interconnected network of the nanowires, and each second region includes a plurality of nanotrenches through the second layer into the first layer.Type: ApplicationFiled: June 12, 2017Publication date: September 28, 2017Inventors: Mark J. Pellerite, Seth M. Kirk, Hyacinth L. Lechuga
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Patent number: 9711263Abstract: A method comprising: providing a transparent electrically conductive film comprising: a transparent substrate (14); a composite layer (18) comprising: an electrically conductive layer disposed on at least a portion of a major surface of the transparent substrate (14) and comprising a plurality of interconnecting metallic nanowires (12); and a polymeric overcoat layer disposed on a portion of the electrically conductive layer, to provide a coated area of the electrically conductive layer; and patternwise exposing the coated area of the electrically conductive layer to a corona discharge to provide a patternwise exposed electrically conductive film comprising (1) an un exposed region (122) of the coated region having a first electrical resistivity, and (2) an exposed region (121) having a second electrical resistivity; wherein the exposed region is less electrically conductive than the unexposed region, and wherein there is a ratio of the second electrical resistivity over the first electrical resistivity of atType: GrantFiled: May 2, 2013Date of Patent: July 18, 2017Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Mark J. Pellerite, Seth M. Kirk, Hyacinth L. Lechuga
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Patent number: 9603242Abstract: A transparent electrical conductor (10; 20), comprising a transparent substrate (14; 201); a composite layer (18; 28) comprising an electrically conductive layer (12) disposed on at least a portion of a major surface of the transparent substrate (14; 201) and comprising a plurality of interconnecting metallic nanowires, and a polymeric overcoat layer (16) disposed on at least a portion of the electrically conductive layer (12); wherein a pattern in the composite layer includes an x-axis and a y-axis of an x-y plane of the composite layer and a z-axis into the x-y plane of the composite layer, and the pattern defines a plurality of electrically conductive regions (24, 24?) in the x-y plane of the composite layer (18; 28), wherein the electrically conductive regions (24, 24?) are separated from each other by electrically insulative traces (21), each of which defines a valley into the z-axis of the x-y plane of the composite layer (18; 28), the valley having a maximum depth (27) in a range from 50 nanometers toType: GrantFiled: December 10, 2012Date of Patent: March 21, 2017Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Mark J. Pellerite, John P. Baetzold, John J. Stradinger, Pingfan Wu, Hyacinth L. Lechuga, Manoj Nirmal
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Publication number: 20160318287Abstract: Described herein is composite article comprising a substrate; and on at least one face of the substrate a multilayered coating disposed thereon.Type: ApplicationFiled: December 16, 2014Publication date: November 3, 2016Inventors: Kui Chen-Ho, Caroline M. Ylitalo, Yu Yang, Yongshang Lu, Alan L. Levin, Hyacinth L. Lechuga, Steven H. Kong, Suresh I. Iyer, Ingrid N. Haugan, Mahfuza B. Ali