Patents by Inventor Pascale Oram

Pascale Oram 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: 20210253473
    Abstract: A non-frangible glass article strengthened by a dual or two-step ion exchange (IOX) process, where the first IOX step leads to a depth of compressive layer FSM_DOL>0.1·t or, in some embodiments, FSM_DOL>0.15·t, where t is the thickness of the glass, is provided. The glass article has a compressive stress CS1 after the first IOX step at the surface of from 100 MPa to 400 MPa or, in some embodiments, from 150 MPa to 300 MPa. The first IOX step is followed by a second IOX step, leading to a “spike” compressive stress CS2 after the second IOX step at the surface of greater than 500 MPa or, in some embodiments, 700 MPa. The width of the spike generated by the second IOX is between 1 ?m and 30 ?m, or between 8 ?m and 15 ?m, using the criteria where the magnitude (absolute value) of the slope of the spike is higher than 20 MPa/?m.
    Type: Application
    Filed: May 3, 2021
    Publication date: August 19, 2021
    Inventors: PASCALE ORAM, Rostislav Vatchev Roussev, Vitor Marino Schneider, Emily Elizabeth Young
  • Patent number: 11059744
    Abstract: Chemically strengthened glass articles exhibiting superior resistance to damage when dropped onto an abrasive surface. The strengthened glass article has a stress profile in which the compressive and tensile stresses within the article vary as a function of the thickness t of the glass article. The stress profile has a first region extending from the surface of the glass article to a depth d1 into the glass, wherein d1?0.025t or ?20 ?m and has a maximum compressive stress of at least about 280 MPa at the surface, a second region extending from a depth of at least d1 to a second depth d2 and having a local compressive stress maximum, and a third region extending from a third depth d3 in the glass to a depth of compression DOC, wherein d2?d3 and DOC?0.15t. A method of strengthening a glass article to provide resistance to damage when dropped is also provided.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: July 13, 2021
    Assignee: Corning Incorporated
    Inventors: Pascale Oram, Vitor Marino Schneider
  • Patent number: 11053162
    Abstract: A method of reworking lithium containing ion exchanged glass articles is provided. The method includes a reverse ion exchange process that returns the glass article to approximately the composition of the glass from which the glass article was produced, before being subjected to ion exchange. The reworked glass articles exhibit a K2O concentration profile comprising a portion wherein a K2O concentration increases to a local K2O concentration maximum.
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: July 6, 2021
    Assignee: CORNING INCORPORATED
    Inventors: Ryan Claude Andrews, Jill Marie Hall, Pascale Oram, Rostislav Vatchev Roussev, Vitor Marino Schneider, Ljerka Ukrainczyk
  • Patent number: 11021393
    Abstract: A non-frangible glass article strengthened by a dual or two-step ion exchange (IOX) process, where the first IOX step leads to a depth of compressive layer FSM_DOL>0.1·t or, in some embodiments, FSM_DOL>0.15·t, where t is the thickness of the glass, is provided. The glass article has a compressive stress CS1 after the first IOX step at the surface of from 100 MPa to 400 MPa or, in some embodiments, from 150 MPa to 300 MPa. The first IOX step is followed by a second IOX step, leading to a “spike” compressive stress CS2 after the second IOX step at the surface of greater than 500 MPa or, in some embodiments, 700 MPa. The width of the spike generated by the second IOX is between 1 ?m and 30 ?m, or between 8 ?m and 15 ?m, using the criteria where the magnitude (absolute value) of the slope of the spike is higher than 20 MPa/?m.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: June 1, 2021
    Assignee: Corning Incorporated
    Inventors: Pascale Oram, Rostislav Vatchev Roussev, Vitor Marino Schneider, Emily Elizabeth Young
  • Publication number: 20210155533
    Abstract: Glass-based articles comprise stress profiles providing improved fracture resistance and decreased weight gain. The glass-based articles are produced with a single-step ion exchange process.
    Type: Application
    Filed: November 20, 2020
    Publication date: May 27, 2021
    Inventors: Pascale Oram, Rostislav Vatchev Roussev
  • Publication number: 20200399173
    Abstract: Methods of manufacturing a glass-based article comprise: after mechanical polishing of a glass-based substrate, treating at least one surface of the glass-based substrate for protection of the at least one surface from contamination and/or for removal of contaminants from the at least one surface by a treatment other than ultrasonic cleaning; and exposing the glass-based substrate to an ion exchange treatment after the treating step to form the glass-based article. The treating step includes: exposing the at least one surface to a high pH soaking for removal of contaminants; deionizing the at least one surface for removal of contaminants; and/or applying a temporary coating to the at least one surface for protection of the at least one surface from contamination, and removing the temporary coating prior to the ion exchange treatment step. The ion exchange treatment may comprise a molten salt bath having an increased pH and temperature.
    Type: Application
    Filed: March 8, 2019
    Publication date: December 24, 2020
    Inventors: Jaymin Amin, Matthew John Dejneka, Yuhui Jin, Robert George Manley, Jonathan Michael Mis, Pascale Oram, Vitor Marino Schneider, Charlene Marie Smith, Wei Sun, Wanda Janina Walczak, Liying Zhang
  • Patent number: 10843963
    Abstract: Methods for regenerating poisoned salt bath comprising providing a salt bath comprising at least one of KNO3 and NaNO3, providing an ion-exchangeable substrate comprising lithium cations, contacting at least a portion of the ion-exchangeable substrate with the salt bath, whereby lithium cations in the salt bath diffuse from the ion-exchangeable substrate and are dissolved in the salt bath, and selectively precipitating dissolved lithium cations from the salt bath using phosphate salt. The methods further include preventing or reducing the formation of surface defects in the ion-exchangeable substrate by preventing or reducing the formation of crystals on the surface of the ion-exchangeable substrate upon removal from the salt bath.
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: November 24, 2020
    Assignee: Corning Incorporated
    Inventors: Jaymin Amin, Xiaoju Guo, Todd LeRoy Heck, Hongmei Hu, Yuhui Jin, Pascale Oram, Ljerka Ukrainczyk
  • Patent number: 10829412
    Abstract: Carriers for microelectronics fabrication may include a strengthened substrate formed from glass or glass-ceramic having an average thickness greater than 1.0 mm and less than or equal to 2.0 mm. The strengthened glass substrate may have a single-side surface area greater than or equal to 70,000 mm2. The substrate may also have a compressive stress greater than or equal to 200 MPa and a depth of layer from about 50 ?m to about 150 ?m. The substrate may further include a tensile stress region having a stored elastic energy of less than 40 kJ/m2 providing for a flat fragmentation factor of less than or equal to 5.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: November 10, 2020
    Assignee: Corning Incorporated
    Inventors: Oladapo Olalekan Bello, Donald Arthur Clark, Gregory Scott Glaesemann, Pascale Oram, Charles Donahue Rizzolo
  • Publication number: 20200308046
    Abstract: Glass-based articles comprise stress profiles providing improved scratch resistance. A glass-based article comprises a lithium aluminosilicate composition and a molar ratio of potassium dioxide (K2O) to sodium dioxide (Na2O) averaged over a distance from the surface to a depth of 0.4 micrometers that is greater than or equal to 0 and less than or equal to 1.8. The article comprises sodium having a non-zero varying concentration extending from a surface of the glass-based article to a depth of the glass-based article and a spike depth of layer that is greater than or equal to 4 micrometers and less than or equal to 8 micrometers. The article may comprise an average compressive stress of greater than or equal to 150 MPa over a depth from 15 micrometers to 40 micrometers.
    Type: Application
    Filed: March 23, 2020
    Publication date: October 1, 2020
    Inventors: Jaymin Amin, Xiaoju Guo, Pascale Oram, Rostislav Vatchev Roussev, Ljerka Ukrainczyk, Taylor Marie Wilkinson
  • Publication number: 20200223750
    Abstract: A strengthened glass having a stress profile that differs from error-function and parabolic profiles. Stress relaxation and thermal annealing/diffusion effects, which occur at longer ion exchange and/or anneal times increase the depth of compression of the surface layer. A method of achieving these effects is also provided.
    Type: Application
    Filed: April 1, 2020
    Publication date: July 16, 2020
    Inventors: Matthew John Dejneka, Pascale Oram, Rostislav Vatchev Roussev, Vitor Marino Schneider, Charlene Marie Smith, Zhongzhi Tang
  • Publication number: 20200181011
    Abstract: Methods for regenerating poisoned salt bath comprising providing a salt bath comprising at least one of KNO3 and NaNO3, providing an ion-exchangeable substrate comprising lithium cations, contacting at least a portion of the ion-exchangeable substrate with the salt bath, whereby lithium cations in the salt bath diffuse from the ion-exchangeable substrate and are dissolved in the salt bath, and selectively precipitating dissolved lithium cations from the salt bath using phosphate salt. The methods further include preventing or reducing the formation of surface defects in the ion-exchangeable substrate by preventing or reducing the formation of crystals on the surface of the ion-exchangeable substrate upon removal from the salt bath.
    Type: Application
    Filed: February 10, 2020
    Publication date: June 11, 2020
    Inventors: Jaymin Amin, Xiaoju Guo, Todd LeRoy Heck, Hongmei Hu, Yuhui Jin, Pascale Oram, Ljerka Ukrainczyk
  • Patent number: 10611681
    Abstract: A strengthened glass having a stress profile that differs from error-function and parabolic profiles. Stress relaxation and thermal annealing/diffusion effects, which occur at longer ion exchange and/or anneal times increase the depth of compression of the surface layer. A method of achieving these effects is also provided.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: April 7, 2020
    Assignee: CORNING INCORPORATED
    Inventors: Matthew John Dejneka, Pascale Oram, Rostislav Vatchev Roussev, Vitor Marino Schneider, Charlene Marie Smith, Zhongzhi Tang
  • Publication number: 20200102243
    Abstract: Glass-based articles are provided with improved stress profiles. The glass-based articles provide improved drop performance and damage resistance. The glass-based articles may be produced with a single ion exchange treatment.
    Type: Application
    Filed: September 27, 2019
    Publication date: April 2, 2020
    Inventors: Qiao Li, Pascale Oram, Rostislav Vatchev Roussev
  • Publication number: 20200062642
    Abstract: A method of chemically strengthening a glass. The method includes heating an ion exchange solution to a temperature less than about 360° C., and contacting the glass and the strengthening solution at the temperature for a duration from about 0.5 hours to about 24 hours. The ion exchange solution includes a primary nitrate and at least one monovalent or divalent cation nitrate component in an amount from about 1 wt. % to about 10 wt. %.
    Type: Application
    Filed: April 15, 2019
    Publication date: February 27, 2020
    Inventors: Sinue Gomez, Xiaoju Guo, Pascale Oram
  • Patent number: 10556826
    Abstract: Methods for regenerating poisoned salt bath comprising providing a salt bath comprising at least one of KNO3 and NaNO3, providing an ion-exchangeable substrate comprising lithium cations, contacting at least a portion of the ion-exchangeable substrate with the salt bath, whereby lithium cations in the salt bath diffuse from the ion-exchangeable substrate and are dissolved in the salt bath, and selectively precipitating dissolved lithium cations from the salt bath using phosphate salt. The methods further include preventing or reducing the formation of surface defects in the ion-exchangeable substrate by preventing or reducing the formation of crystals on the surface of the ion-exchangeable substrate upon removal from the salt bath.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: February 11, 2020
    Assignee: Corning Incorporated
    Inventors: Jaymin Amin, Xiaoju Guo, Todd LeRoy Heck, Hongmei Hu, Yuhui Jin, Pascale Oram, Ljerka Ukrainczyk
  • Patent number: 10556825
    Abstract: Chemically strengthened glass articles having at least one deep compressive layer extending from a surface of the article to a depth of layer DOL of about 130 ?m up to about 175 ?m or, alternatively, to a depth of compression (DOC) in a range from about 90 ?m to about 120 ?m within the article. The compressive layer has a stress profile that includes a first substantially linear portion extending from a relatively shallow depth to the DOL or DOC and a second portion extending from the surface to the shallow depth. The second portion is substantially linear at a depth from 0 ?m to 5 ?m and has a steeper slope than that of the first portion of the profile. Methods of achieving such stress profiles are also described.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: February 11, 2020
    Assignee: Corning Incorporated
    Inventors: Jaymin Amin, Benedict Osobomen Egboiyi, Pascale Oram, Jonathan David Pesansky, Kevin Barry Reiman, Rostislav Vatchev Roussev, Vitor Marino Schneider, Brian Paul Strines
  • Publication number: 20200017407
    Abstract: Carriers for microelectronics fabrication may include a strengthened substrate formed from glass or glass-ceramic having an average thickness greater than 1.0 mm and less than or equal to 2.0 mm. The strengthened glass substrate may have a single-side surface area greater than or equal to 70,000 mm2. The substrate may also have a compressive stress greater than or equal to 200 MPa and a depth of layer from about 50 ?m to about 150 ?m. The substrate may further include a tensile stress region having a stored elastic energy of less than 40 kJ/m2 providing for a flat fragmentation factor of less than or equal to 5.
    Type: Application
    Filed: June 20, 2019
    Publication date: January 16, 2020
    Inventors: Oladapo Olalekan Bello, Donald Arthur Clark, Gregory Scott Glaesemann, Pascale Oram, Charles Donahue Rizzolo
  • Publication number: 20190389764
    Abstract: A method of reworking lithium containing ion exchanged glass articles is provided. The method includes a reverse ion exchange process that returns the glass article to approximately the composition of the glass from which the glass article was produced, before being subjected to ion exchange. The reworked glass articles exhibit a K2O concentration profile comprising a portion wherein a K2O concentration increases to a local K2O concentration maximum.
    Type: Application
    Filed: February 2, 2017
    Publication date: December 26, 2019
    Inventors: Ryan Claude Andrews, Jill Marie Hall, Pascale Oram, Rostislav Vatchev Roussev, Vitor Marino Schneider, Ljerka Ukrainczyk
  • Publication number: 20190375679
    Abstract: Glass-based articles comprise stress profiles providing improved fracture resistance. The glass-based articles herein provide high fracture resistance after multiple drops.
    Type: Application
    Filed: June 7, 2019
    Publication date: December 12, 2019
    Inventors: Timothy Michael Gross, Xiaoju Guo, Jason Thomas Harris, Peter Joseph Lezzi, Alexandra Lai Ching Kao Andr Mitchell, Pascale Oram, Kevin Barry Reiman, Rostislav Vatchev Roussev, Ljerka Ukrainczyk
  • Publication number: 20190367410
    Abstract: A method of reworking lithium containing ion exchanged glass-based articles is provided. The method includes a reverse ion exchange process that returns the glass-based article to approximately the composition of the glass from which the glass-based article was produced, before being subjected to ion exchange.
    Type: Application
    Filed: May 29, 2019
    Publication date: December 5, 2019
    Inventors: Yuhui Jin, Pascale Oram, Rostislav Vatchev Roussev