Patents by Inventor Ta-Hua Yu

Ta-Hua Yu 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: 10617784
    Abstract: An article having anti-microbial effect is provided. The article includes an occlusive layer; a substrate overlaying the occlusive layer, wherein the substrate having two opposing major surfaces; a metal oxide layer overlaying the substrate, wherein the metal oxide layer comprises a metal oxide and wherein the metal oxide layer comprises less than 40 wt. % non-oxidized metal; and a metal layer overlaying the metal oxide layer.
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: April 14, 2020
    Assignee: 3M Innovative Properties Company
    Inventors: Ta-Hua Yu, Döne Demirgöz, Junkang J. Liu, Badri Veeraraghavan, Narina Y. Stepanova
  • Publication number: 20200087520
    Abstract: Surface structured articles comprising a polymer matrix and a dispersed phase, the article having first and second opposed major surfaces, at least a portion of the first major surface is a microstructured, anisotropic surface comprises features having at least one dimension in a range from 1 micrometer to 500 micrometers, wherein the dispersed phase comprises an antimicrobial material, and wherein at least a portion of the dispersed phase is present on the microstructured, anisotropic surface. Surface structured articles are useful, for example, for marine applications (e.g., surfaces in contact with water (e.g., fresh water, ocean water)) such as boats, ships, piers, oil rigs, decks, and roofing materials.
    Type: Application
    Filed: December 19, 2017
    Publication date: March 19, 2020
    Inventors: Timothy J. Hebrink, Rachael A.T. Gould, Moses M. David, Rebecca L. A. Everman, Simon K. Shannon, Ta-Hua Yu
  • Publication number: 20200001249
    Abstract: The present disclosure provides a multilayer article. The multilayer article includes a) a microfiltration membrane substrate, the microfiltration membrane substrate having a first major surface; and b) a first layer having a first major surface and a second major surface disposed opposite the first major surface. The first major surface of the first layer is directly attached to the first major surface of the microfiltration membrane substrate. The first layer includes a first polymeric binder and a plurality of acid-sintered interconnected first silica nanoparticles arranged to form a continuous three-dimensional porous network. The multilayer article further includes c) a second layer attached to the second major surface of the first layer. The second layer includes i) a metal coating or ii) a composite coating comprising a second polymeric binder and at least one of metal nanoparticles or metal nanowires.
    Type: Application
    Filed: March 7, 2018
    Publication date: January 2, 2020
    Inventors: Chunjie Zhang, Ta-Hua Yu, Hongying Jiang, Xuan Jiang, Kevin M. Casey
  • Patent number: 10515740
    Abstract: A flame-retardant flat electrical cable has a magnesium oxide dielectric layer. A plurality of spaced apart substantially parallel electrical conductors generally lie in the same plane and extend along the length of the cable. A dielectric layer is disposed on the top and/or bottom sides of the cable and covers the conductors. The dielectric layer has at least 90% magnesium oxide by weight.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: December 24, 2019
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Rui Yang, Ta-Hua Yu
  • Publication number: 20190299700
    Abstract: A security element, including: a substrate having a first structured major surface and a second structured major surface; and a first metal layer coated on the first structured major surface, wherein the transparency of the first metal layer is between 10% and 90%; and a second metal layer coated on the second structured major surface.
    Type: Application
    Filed: March 22, 2019
    Publication date: October 3, 2019
    Inventors: Ta-Hua Yu, William Blake Kolb, Douglas S. Dunn
  • Publication number: 20190299699
    Abstract: A security element, including: a substrate; a monolayer of beads on the substrate; and a metal layer on the monolayer of beads; wherein the size of the beads is in between about 100 nm to about 50 ?m.
    Type: Application
    Filed: March 22, 2019
    Publication date: October 3, 2019
    Inventors: Ta-Hua Yu, William Blake Kolb
  • Patent number: 10420207
    Abstract: The present disclosure provides an article having a substrate having a first nanostructured surface and an opposing second surface; and a conductor micropattern disposed on the first surface of the substrate, the conductor micropattern formed by a plurality of traces. The micropattern may have an open area fraction greater than 80%. The traces of the conductor micropattern may have a specular reflectance in a direction orthogonal to and toward the first surface of the substrate of less than 50%. The nanostructured surface may include nanofeatures having a height from 50 to 750 nanometers, a width from 15 to 200 nanometers, and a lateral spacing from 5 to 500 nanometers. The articles are useful in devices such as displays, in particular, touch screen displays useful for mobile hand held devices, tablets and computers. They also find use in antennas and for EMI shields.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: September 17, 2019
    Assignee: 3M Innovative Properties Company
    Inventors: Matthew H. Frey, Ta-Hua Yu, Kari A. McGee, Hui Luo, William B. Kolb, Brant U. Kolb, Moses M. David, Lijun Zu
  • Publication number: 20190275191
    Abstract: An article having anti-microbial effect is provided. The article includes an occlusive layer; a substrate overlaying the occlusive layer, wherein the substrate having two opposing major surfaces; a metal oxide layer overlaying one opposing major surface of the substrate, wherein the metal oxide layer comprises a metal oxide; and a metal layer overlaying the other opposing major surface of the substrate; wherein the substrate is between the metal oxide layer and the metal layer; and wherein electric potential of the metal oxide layer is at least 0.454V more than electric potential of the metal layer.
    Type: Application
    Filed: October 5, 2017
    Publication date: September 12, 2019
    Inventors: Junkang Jacob Liu, Ta-Hua Yu, Amy K. McNulty, Narina Y. Stepanova, Badri Veeraraghavan, Eric J. Olson, Matthew T. Scholz, Ranjani V. Parthasarathy, Kevin D. Hagen
  • Publication number: 20190248111
    Abstract: A film including a resin layer comprising a structured major surface opposite a second major surface, the structured major surface including a plurality of features; a barrier layer on the structured major surface; and a first adhesive layer on the barrier layer.
    Type: Application
    Filed: July 18, 2017
    Publication date: August 15, 2019
    Inventors: Brett J. Sitter, David J. Rowe, John P. Baetzold, Bill H. Dodge, Evan L. Schwartz, Kevin W. Gotrik, Christopher S. Lyons, Ta-Hua Yu
  • Patent number: 10328389
    Abstract: Articles are described including a first microfiltration membrane layer having a first major surface and a second major surface disposed opposite the first major surface, and a first silica layer directly attached to the first major surface of the first microfiltration membrane layer. The first silica layer includes a polymeric binder and acid-sintered interconnected silica nanoparticles arranged to form a continuous three-dimensional porous network. A method of making an article is also described, including providing a first microfiltration membrane layer having a first major surface and a second major surface disposed opposite the first major surface, and forming a first silica layer on the first major surface.
    Type: Grant
    Filed: April 3, 2015
    Date of Patent: June 25, 2019
    Assignee: 3M Innovative Properties Company
    Inventors: Xuan Jiang, Kuan-Yin Lin, Michelle M Mok, Naiyong Jing, Derek J. Dehn, Richard J. Pokorny, Ta-Hua Yu
  • Publication number: 20190184422
    Abstract: An organofluorine coating on a major surface of a substrate, wherein the organofluorine coating has a surface composition of about 5 at % to about 15 at % oxygen and about 30 at % to about 50 at % fluorine.
    Type: Application
    Filed: June 15, 2017
    Publication date: June 20, 2019
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Ta-Hua Yu, Moses M. David, Kevin D. Hagen, Samuel J. Carpenter, Eric J. Hanson, Martin B. Wolk, Steven J. McMan, Evan L. Schwartz
  • Publication number: 20190054202
    Abstract: An article having anti-microbial effect is provided. The article includes an occlusive layer; a substrate having two opposing major surfaces, wherein one opposing major surface is a nanostructured surface; a metal oxide layer, wherein the nanostructured surface is coated with the metal oxide layer and the metal oxide layer comprises a metal oxide; and a metal layer overlaying the metal oxide layer.
    Type: Application
    Filed: November 10, 2016
    Publication date: February 21, 2019
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Ta-Hua Yu, Döne Demirgöz, Junkang J. Liu, Badri Veeraraghavan, Narina Stepanova
  • Publication number: 20190019600
    Abstract: A flame-retardant flat electrical cable has a magnesium oxide dielectric layer. A plurality of spaced apart substantially parallel electrical conductors generally lie in the same plane and extend along the length of the cable. A dielectric layer is disposed on the top and/or bottom sides of the cable and covers the conductors. The dielectric layer comprises at least 90% magnesium oxide by weight. The dielectric layer exhibits good dielectric properties and is flame retardant without the use of halogens.
    Type: Application
    Filed: July 2, 2018
    Publication date: January 17, 2019
    Inventors: Rui Yang, Ta-Hua Yu
  • Publication number: 20180370200
    Abstract: Barrier assemblies including ultrathin barrier laminates and methods of making the barrier assemblies are provided. A barrier assembly includes a thermoplastic polymer skin layer having opposite first and second major surfaces, and a barrier stack coated on the first major surface of the thermoplastic polymer skin layer to form an integral protective layer having a thickness no greater than about 0.5 mil (about 12.7 microns). The removable carrier film has a major surface releasably attached to the second major surface of the thermoplastic polymer skin layer. In some cases, the removal of the carrier film results in ultrathin barrier laminates.
    Type: Application
    Filed: June 24, 2016
    Publication date: December 27, 2018
    Inventors: David J. Rowe, Ta-Hua Yu, Timothy J. Lindquist, Mark A. Roehrig, Christopher S. Lyons, Stephen P. Maki, Scott J. Jones, Kevin D. Hagen, Andrew M. Mevissen, Kenneth L. Looney, Stephen A. Johnson, Terence D. Neavin, Joseph C. Spagnola, Fred B. McCormick
  • Publication number: 20180353638
    Abstract: An article having anti-microbial effect is provided. The article includes an occlusive layer; a substrate overlaying the occlusive layer, wherein the substrate having two opposing major surfaces; a metal oxide layer overlaying the substrate, wherein the metal oxide layer comprises a metal oxide and wherein the metal oxide layer comprises less than 40 wt. % non-oxidized metal; and a metal layer overlaying the metal oxide layer.
    Type: Application
    Filed: November 3, 2016
    Publication date: December 13, 2018
    Inventors: Ta-Hua Yu, Döne Demirgöz, Junkang J. Liu, Badri Veeraraghavan, Narina Y. Stepanova
  • Patent number: 10134566
    Abstract: A method of making a nanostructure and nanostructured articles by depositing a layer to a major surface of a substrate by plasma chemical vapor deposition from a gaseous mixture while substantially simultaneously etching the surface with a reactive species. The method includes providing a substrate; mixing a first gaseous species capable of depositing a layer onto the substrate when formed into a plasma, with a second gaseous species capable of etching the substrate when formed into a plasma, thereby forming a gaseous mixture; forming the gaseous mixture into a plasma; and exposing a surface of the substrate to the plasma, wherein the surface is etched and a layer is deposited on at least a portion of the etched surface substantially simultaneously, thereby forming the nanostructure. The substrate can be a (co)polymeric material, an inorganic material, an alloy, a solid solution, or a combination thereof.
    Type: Grant
    Filed: July 23, 2014
    Date of Patent: November 20, 2018
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Moses M. David, Ta-Hua Yu, Daniel S. Bates, Jayshree Seth, Michael S. Berger, Carsten Franke, Sebastian F. Zehentmaier
  • Patent number: 10126469
    Abstract: Nanostructured material exhibiting a random anisotropic nanostructured surface, and exhibiting an average reflection at 60 degrees off angle less than 1 percent. The nanostructured materials are useful, for example, for optical and optoelectronic devices, displays, solar, light sensors, eye wear, camera lens, and glazing.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: November 13, 2018
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Ta-Hua Yu, Moses M. David, Abdujabar K. Dire, Albert I. Everaerts, William Blake Kolb, Todd M. Sandman, Shunsuke Suzuki, Scott A. Walker
  • Patent number: 10119190
    Abstract: A method of making a nanostructure and nanostructured articles by depositing a layer to a major surface of a substrate by plasma chemical vapor deposition from a gaseous mixture while substantially simultaneously etching the surface with a reactive species. The method includes providing a substrate; mixing a first gaseous species capable of depositing a layer onto the substrate when formed into a plasma, with a second gaseous species capable of etching the substrate when formed into a plasma, thereby forming a gaseous mixture; forming the gaseous mixture into a plasma; and exposing a surface of the substrate to the plasma, wherein the surface is etched and a layer is deposited on at least a portion of the etched surface substantially simultaneously, thereby forming the nanostructure. The substrate can be a (co)polymeric material, an inorganic material, an alloy, a solid solution, or a combination thereof.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: November 6, 2018
    Assignee: 3M Innovative Properties Company
    Inventors: Moses M. David, Ta-Hua Yu, Daniel S. Bates, Jayshree Seth, Michael S. Berger, Carsten Franke, Sebastian F. Zehentmaier
  • Patent number: 10036831
    Abstract: Material comprising sub-micrometer particles dispersed in a polymeric matrix. The materials are useful in article, for example, for numerous applications including display applications (e.g., liquid crystal displays (LCD), light emitting diode (LED) displays, or plasma displays); light extraction; electromagnetic interference (EMI) shielding, ophthalmic lenses; face shielding lenses or films; window films; antireflection for construction applications; and construction applications or traffic signs.
    Type: Grant
    Filed: August 13, 2012
    Date of Patent: July 31, 2018
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Ta-Hua Yu, Moses M. David, Douglas S. Dunn, Seth M. Kirk, Brant U. Kolb, William Blake Kolb, Mark A. Strobel, Jun-Ying Zhang
  • Publication number: 20180169697
    Abstract: There is provided a barrier film having a substrate, a low thermal conductivity organic layer and an inorganic stack. The inorganic stack will include a low thermal conductivity non-metallic inorganic material layer and a high thermal conductivity metallic material layer.
    Type: Application
    Filed: June 9, 2016
    Publication date: June 21, 2018
    Inventors: Christopher A. Merton, Ta-Hua Yu, Christopher S. Lyons, Kam Poi Chia, Brent Beamer, Cedric Bedoya, Paul T. Engen, Amy Preszler Prince