Patents by Inventor Ross Johnson Stewart

Ross Johnson Stewart 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).

  • Publication number: 20250122117
    Abstract: A glass-based assembly includes a glass or glass-ceramic substrate comprising a surface. The surface has flaws, such as a population of small cracks extending into the surface, whereby the substrate is weakened relative to ideal strength thereof. The assembly further includes a coating coupled to the substrate and overlaying at least some of the flaws. Ultimate strength of the substrate with the coating coupled thereto is greater than that of the substrate alone, without the coating.
    Type: Application
    Filed: December 20, 2024
    Publication date: April 17, 2025
    Inventors: Ronald William Davis, JR., John Philip Finkeldey, Lawrence Vincent Daniel Gammond, Timothy Michael Gross, Jason Thomas Harris, Shandon Dee Hart, Erin Katherine Hosmer, John Tyler Keech, Alexandra Lai Ching Kao Andrews Mitchell, Aniello Mario Palumbo, Naveen Prakash, James Joseph Price, Ross Johnson Stewart, Nicholas Michael Walker, Wendell Porter Weeks, JR., Jingshi Wu
  • Publication number: 20250042806
    Abstract: A textured article is described herein comprising a substrate comprising a textured region defined on a primary surface of the substrate, in which the textured region comprises (a) a Vmp/Sq of at least 0.084, (b) a Vmp/Sq of at least 0.084 and an Smrk2 of at least 90%, and/or (c) a Vmp of at least 10 nm and an Sdq of 0-0.1. The textured article generally has good abrasion resistance and optical properties including antiglare, haze, sparkle, and distinctness of image. A method for making a textured article is also described herein comprising removing a first portion of a primary surface of a substrate through holes penetrating through a stop layer to the primary surface to form seed depressions and unremoved portions, removing the stop layer, and then removing a second portion of the primary surface comprising the seed depressions and the unremoved portions.
    Type: Application
    Filed: August 2, 2024
    Publication date: February 6, 2025
    Inventors: Melanie Lian Geiger, Yuhui Jin, Cameron Robert Nelson, James Joseph Price, Ross Johnson Stewart, Florence Christine Monique Verrier, David Lee Weidman, Binwei Zhang
  • Publication number: 20240375996
    Abstract: Glass-based articles are provided that exhibit improved fracture resistance. The relationships between properties attributable to the glass composition and stress profile of the glass-based articles are provided that indicate improved fracture resistance.
    Type: Application
    Filed: July 24, 2024
    Publication date: November 14, 2024
    Inventors: Xiaoju Guo, Jennifer Lynn Hunt, Peter Joseph Lezzi, Rostislav Vatchev Roussev, Charlene Marie Smith, Ross Johnson Stewart
  • Patent number: 12077470
    Abstract: Glass-based articles are provided that exhibit improved fracture resistance. The relationships between properties attributable to the glass composition and stress profile of the glass-based articles are provided that indicate improved fracture resistance.
    Type: Grant
    Filed: April 5, 2023
    Date of Patent: September 3, 2024
    Assignee: CORNING INCORPORATED
    Inventors: Xiaoju Guo, Jennifer Lynn Hunt, Peter Joseph Lezzi, Rostislav Vatchev Roussev, Charlene Marie Smith, Ross Johnson Stewart
  • Publication number: 20240166549
    Abstract: A glass substrate comprises: a first position, wherein a tensile stress of the glass substrate is insufficient to cause fragmentation of the glass substrate into small pieces upon fracture of the glass substrate; and a second position, wherein the glass substrate is bent relative to the first position, and wherein the tensile stress of the glass substrate is sufficient to cause fragmentation of the glass substrate into small pieces upon fracture of the glass substrate. The glass substrate can include a first surface and a second surface. In the first position, the first surface and the second surface of the glass substrate can be planar. In the second position, the first surface and the second surface of the glass substrate can be planar. The small pieces can be generally cubic. In the second position, the glass substrate can be bent uniaxially along a bend axis of the glass substrate.
    Type: Application
    Filed: January 31, 2024
    Publication date: May 23, 2024
    Inventors: Jason Thomas Harris, Peter Joseph Lezzi, Ross Johnson Stewart
  • Patent number: 11926552
    Abstract: A glass substrate comprises: a first position, wherein a tensile stress of the glass substrate is insufficient to cause fragmentation of the glass substrate into small pieces upon fracture of the glass substrate; and a second position, wherein the glass substrate is bent relative to the first position, and wherein the tensile stress of the glass substrate is sufficient to cause fragmentation of the glass substrate into small pieces upon fracture of the glass substrate. The glass substrate can include a first surface and a second surface. In the first position, the first surface and the second surface of the glass substrate can be planar. In the second position, the first surface and the second surface of the glass substrate can be planar. The small pieces can be generally cubic. In the second position, the glass substrate can be bent uniaxially along a bend axis of the glass substrate.
    Type: Grant
    Filed: November 8, 2019
    Date of Patent: March 12, 2024
    Assignee: CORNING INCORPORATED
    Inventors: Jason Thomas Harris, Peter Joseph Lezzi, Ross Johnson Stewart
  • Patent number: 11827559
    Abstract: Frangible glass articles having a fracture behavior that resists ejection of glass particles upon fracture. In some embodiments, the frangible glass articles can have a first surface region with a first elastic compressive stress energy per unit area of glass (Welcomp1), a second surface region with a second elastic compressive stress energy per unit area of glass (Welcomp2), and a central region with an elastic tensile stress energy per unit area of glass (WT), where (Welcomp1+Welcomp2)?WT?25 J/m2. In some embodiments, the frangible glass articles can have a total load ratio (Wi/GD) less than 6.5 and a total elastic compressive stress energy per unit area of glass (WC) less than 60% of a total load (Wi), where: WC=Welcomp1+Welcomp2, Wi=WC+WT, GD=4G1C, and G 1 ? C = K 1 ? C 2 ? ( 1 - v 2 ) E . In some embodiments, the frangible glass articles can have a differential load ratio (Wd/GIC) less than 7 ? 2 ? e ( - 1 ? 2 ? d ? 1 t ) .
    Type: Grant
    Filed: June 22, 2021
    Date of Patent: November 28, 2023
    Assignee: Corning Incorporated
    Inventors: Jason Thomas Harris, Joshua James McCaslin, Naveen Prakash, Vitor Marino Schneider, Charandeep Singh, Ross Johnson Stewart
  • Publication number: 20230234884
    Abstract: Glass-based articles are provided that exhibit improved fracture resistance. The relationships between properties attributable to the glass composition and stress profile of the glass-based articles are provided that indicate improved fracture resistance.
    Type: Application
    Filed: April 5, 2023
    Publication date: July 27, 2023
    Inventors: Xiaoju Guo, Jennifer Lynn Hunt, Peter Joseph Lezzi, Rostislav Vatchev Roussev, Charlene Marie Smith, Ross Johnson Stewart
  • Patent number: 11639310
    Abstract: Glass-based articles are provided that exhibit improved fracture resistance. The relationships between properties attributable to the glass composition and stress profile of the glass-based articles are provided that indicate improved fracture resistance.
    Type: Grant
    Filed: September 27, 2021
    Date of Patent: May 2, 2023
    Assignee: CORNING INCORPORATED
    Inventors: Xiaoju Guo, Jennifer Lynn Hunt, Peter Joseph Lezzi, Rostislav Vatchev Roussev, Charlene Marie Smith, Ross Johnson Stewart
  • Publication number: 20220017400
    Abstract: A glass substrate comprises: a first position, wherein a tensile stress of the glass substrate is insufficient to cause fragmentation of the glass substrate into small pieces upon fracture of the glass substrate; and a second position, wherein the glass substrate is bent relative to the first position, and wherein the tensile stress of the glass substrate is sufficient to cause fragmentation of the glass substrate into small pieces upon fracture of the glass substrate. The glass substrate can include a first surface and a second surface. In the first position, the first surface and the second surface of the glass substrate can be planar. In the second position, the first surface and the second surface of the glass substrate can be planar. The small pieces can be generally cubic. In the second position, the glass substrate can be bent uniaxially along a bend axis of the glass substrate.
    Type: Application
    Filed: November 8, 2019
    Publication date: January 20, 2022
    Inventors: Jason Thomas Harris, Peter Joseph Lezzi, Ross Johnson Stewart
  • Publication number: 20220009829
    Abstract: Glass-based articles are provided that exhibit improved fracture resistance. The relationships between properties attributable to the glass composition and stress profile of the glass-based articles are provided that indicate improved fracture resistance.
    Type: Application
    Filed: September 27, 2021
    Publication date: January 13, 2022
    Inventors: Xiaoju Guo, Jennifer Lynn Hunt, Peter Joseph Lezzi, Rostislav Vatchev Roussev, Charlene Marie Smith, Ross Johnson Stewart
  • Patent number: 11214515
    Abstract: Glass-based articles having defined stress profiles and methods for manufacturing such glass-based articles are provided. A non-limiting glass-based article comprises an outer region extending from the surface to a depth of compression, wherein the outer region is under a neutral stress or a first compressive stress, a core region under a second compressive stress, the second compressive stress defining a compression peak having a maximum compression value and a maximum width at zero stress in a range of from about 1 micrometer to about 200 micrometers, and an intermediate region disposed between the surface and the core region, wherein the intermediate region is under a tensile stress.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: January 4, 2022
    Assignee: CORNING INCORPORATED
    Inventors: Jason Thomas Harris, Kevin Barry Reiman, Rostislav Vatchev Roussev, Ross Johnson Stewart
  • Publication number: 20210395141
    Abstract: Frangible glass articles having a fracture behavior that resists ejection of glass particles upon fracture. In some embodiments, the frangible glass articles can have a first surface region with a first elastic compressive stress energy per unit area of glass (Welcomp1), a second surface region with a second elastic compressive stress energy per unit area of glass (Welcomp2), and a central region with an elastic tensile stress energy per unit area of glass (WT), where (Welcomp1+Welcomp2)?WT?25 J/m2. In some embodiments, the frangible glass articles can have a total load ratio (Wi/GD) less than 6.5 and a total elastic compressive stress energy per unit area of glass (WC) less than 60% of a total load (Wi), where: WC=Welcomp1+Welcomp2, Wi=WC+WT, GD=4G1C, and G 1 ? C = K 1 ? C 2 ? ( 1 - v 2 ) E . In some embodiments, the frangible glass articles can have a differential load ratio (Wd/GIC) less than 7 ? 2 ? e ( - 1 ? 2 ? d ? 1 t ) .
    Type: Application
    Filed: June 22, 2021
    Publication date: December 23, 2021
    Inventors: Jason Thomas Harris, Joshua James McCaslin, Naveen Prakash, Vitor Marino Schneider, Charandeep Singh, Ross Johnson Stewart
  • Patent number: 11130705
    Abstract: Glass-based articles are provided that exhibit improved fracture resistance. The relationships between properties attributable to the glass composition and stress profile of the glass-based articles are provided that indicate improved fracture resistance.
    Type: Grant
    Filed: September 10, 2019
    Date of Patent: September 28, 2021
    Assignee: CORNING INCORPORATED
    Inventors: Xiaoju Guo, Jennifer Lynn Hunt, Peter Joseph Lezzi, Rostislav Vatchev Roussev, Charlene Marie Smith, Ross Johnson Stewart
  • Publication number: 20200079689
    Abstract: Glass-based articles are provided that exhibit improved fracture resistance. The relationships between properties attributable to the glass composition and stress profile of the glass-based articles are provided that indicate improved fracture resistance.
    Type: Application
    Filed: September 10, 2019
    Publication date: March 12, 2020
    Inventors: Xiaoju Guo, Jennifer Lynn Hunt, Peter Joseph Lezzi, Rostislav Vatchev Roussev, Charlene Marie Smith, Ross Johnson Stewart
  • Publication number: 20190161402
    Abstract: Glass-based articles having defined stress profiles and methods for manufacturing such glass-based articles are provided. A non-limiting glass-based article comprises an outer region extending from the surface to a depth of compression, wherein the outer region is under a neutral stress or a first compressive stress, a core region under a second compressive stress, the second compressive stress defining a compression peak having a maximum compression value and a maximum width at zero stress in a range of from about 1 micrometer to about 200 micrometers, and an intermediate region disposed between the surface and the core region, wherein the intermediate region is under a tensile stress.
    Type: Application
    Filed: November 29, 2018
    Publication date: May 30, 2019
    Inventors: Jason Thomas Harris, Kevin Barry Reiman, Rostislav Vatchev Roussev, Ross Johnson Stewart