Patents by Inventor Jayantha Senawiratne

Jayantha Senawiratne 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: 11971519
    Abstract: A display article is described herein that includes: a substrate comprising a thickness and a primary surface; a textured surface region; and an antireflective coating disposed on the textured surface region. The textured surface region comprises structural features and an average texture height (Rtext) from 50 nm to 300 nm. The substrate exhibits a sparkle of less than 5%, as measured by PPD140, and a transmittance haze of less than 40%, at a 0° incident angle. The antireflective coating comprises alternating high refractive index and low refractive index layers. Each of the low index layers comprises a refractive index of less than or equal to 1.8, and each of the high index layers comprises a refractive index of greater than 1.8. The article also exhibits a first-surface average photopic specular reflectance (% R) of less than 0.3% at any incident angle from about 5° to 20° from normal at visible wavelengths.
    Type: Grant
    Filed: July 8, 2021
    Date of Patent: April 30, 2024
    Assignee: CORNING INCORPORATED
    Inventors: Shandon Dee Hart, Karl William Koch, III, Carlo Anthony Kosik Williams, Lin Lin, Cameron Robert Nelson, James Joseph Price, Jayantha Senawiratne, Florence Christine Monique Verrier, David Lee Weidman
  • Patent number: 11912619
    Abstract: A textured glass article includes: a body comprising an aluminosilicate glass comprising greater than or equal to 16 wt % Al2O3, the body having at least a first surface; and a plurality of polyhedral surface features extending from the first surface, each of the plurality of polyhedral surface features comprising a base on the first surface, a plurality of facets extending from the first surface, and a surface feature size at the base greater than or equal to 10 ?m and less than or equal to 350 ?m, wherein the plurality of facets of each polyhedral surface feature converge toward one another.
    Type: Grant
    Filed: August 31, 2021
    Date of Patent: February 27, 2024
    Assignee: CORNING INCORPORATED
    Inventors: Xinyu Cao, Christine Cecala, Ling Chen, Wanghui Chen, Yuhui Jin, Cameron Robert Nelson, Jayantha Senawiratne, David Lee Weidman
  • Patent number: 11442008
    Abstract: The systems and methods include generating polarization-switched (PS) detector and reference signals using a polarization switch controlled by a digital control signal generated by digital input/output card. A gain adjustment is performed on the PS detector and reference signals to define gain-adjusted detector and reference signals. The digital control signal is used to synchronize the gain-adjusted PS detector and reference signals to define gain-adjusted synchronized PS detector and reference signals each having respective steady-state portions. The steady state portions are used to define a measurement signal. The measurement signal is then used to calculate a stress-based characteristic of the sample being measured. The sample can be moved continuously or discretely through different measurement positions, which are synchronized with the operation of the polarization switch using the digital control signal.
    Type: Grant
    Filed: July 31, 2020
    Date of Patent: September 13, 2022
    Assignee: Corning Incorporated
    Inventors: Norman Henry Fontaine, Vitor Marino Schneider, Jayantha Senawiratne
  • Publication number: 20220073418
    Abstract: A textured glass article includes: a body comprising an aluminosilicate glass comprising greater than or equal to 16 wt % Al2O3, the body having at least a first surface; and a plurality of polyhedral surface features extending from the first surface, each of the plurality of polyhedral surface features comprising a base on the first surface, a plurality of facets extending from the first surface, and a surface feature size at the base greater than or equal to 10 ?m and less than or equal to 350 ?m, wherein the plurality of facets of each polyhedral surface feature converge toward one another.
    Type: Application
    Filed: August 31, 2021
    Publication date: March 10, 2022
    Applicant: Corning Incorporated
    Inventors: Xinyu Cao, Christine Cecala, Ling Chen, Wanghui Chen, Yuhui Jin, Cameron Robert Nelson, Jayantha Senawiratne, David Lee Weidman
  • Publication number: 20220011468
    Abstract: A display article is described herein that includes: a substrate comprising a thickness and a primary surface; a textured surface region; and an antireflective coating disposed on the textured surface region. The textured surface region comprises structural features and an average texture height (Rtext) from 50 nm to 300 nm. The substrate exhibits a sparkle of less than 5%, as measured by PPD140, and a transmittance haze of less than 40%, at a 0° incident angle. The antireflective coating comprises alternating high refractive index and low refractive index layers. Each of the low index layers comprises a refractive index of less than or equal to 1.8, and each of the high index layers comprises a refractive index of greater than 1.8. The article also exhibits a first-surface average photopic specular reflectance (% R) of less than 0.3% at any incident angle from about 5° to 20° from normal at visible wavelengths.
    Type: Application
    Filed: July 8, 2021
    Publication date: January 13, 2022
    Inventors: Shandon Dee Hart, Karl William Koch, III, Carlo Anthony Kosik Williams, Lin Lin, Cameron Robert Nelson, James Joseph Price, Jayantha Senawiratne, Florence Christine Monique Verrier, David Lee Weidman
  • Publication number: 20210033530
    Abstract: The systems and methods include generating polarization-switched (PS) detector and reference signals using a polarization switch controlled by a digital control signal generated by digital input/output card. A gain adjustment is performed on the PS detector and reference signals to define gain-adjusted detector and reference signals. The digital control signal is used to synchronize the gain-adjusted PS detector and reference signals to define gain-adjusted synchronized PS detector and reference signals each having respective steady-state portions. The steady state portions are used to define a measurement signal. The measurement signal is then used to calculate a stress-based characteristic of the sample being measured. The sample can be moved continuously or discretely through different measurement positions, which are synchronized with the operation of the polarization switch using the digital control signal.
    Type: Application
    Filed: July 31, 2020
    Publication date: February 4, 2021
    Inventors: Norman Henry Fontaine, Vitor Marino Schneider, Jayantha Senawiratne
  • Publication number: 20110016975
    Abstract: Methods and apparatus for measuring, in-situ, at least one characteristic of a bonding process between a material sheet and a substrate, include: producing acoustic signals in response to acoustic energy within at least one of the material sheet and the substrate proximate to a bonding interface between the material sheet and the substrate; and deriving the at least one characteristic of the bonding process from the acoustic signals.
    Type: Application
    Filed: July 24, 2009
    Publication date: January 27, 2011
    Inventors: Gregory Scott Glaesemann, Jessica Danielle Maurer, Johannes Moll, Jayantha Senawiratne