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公开(公告)号：US20220411324A1
公开(公告)日：2022-12-29
申请号：US17894693
申请日：2022-08-24
Applicant: CORNING INCORPORATED
Inventor： Jaymin Amin , Xiaoju Guo , Pascale Oram , Rostislav Vatchev Roussev , Ljerka Ukrainczyk , Taylor Marie Wilkinson
Abstract: Methods of manufacturing a glass-based article includes exposing a glass-based substrate having a lithium aluminosilicate composition to an ion exchange treatment to form the glass-based article. The ion exchange treatment including a molten salt bath having a concentration of a sodium salt in a range from 8 mol % to 100 mol %. The glass-based article includes sodium having a non-zero varying concentration extending from a surface of the glass-based article to a depth of the glass-based article The glass-based article has compressive stress layer extending from the surface to a spike depth of layer from 4 micrometers to 8 micrometers. The glass-based article includes a molar ratio of potassium oxide (K2O) to sodium oxide (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.
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公开(公告)号：US11472733B2
公开(公告)日：2022-10-18
申请号：US16826473
申请日：2020-03-23
Applicant: CORNING INCORPORATED
Inventor： Jaymin Amin , Xiaoju Guo , Pascale Oram , Rostislav Vatchev Roussev , Ljerka Ukrainczyk , Taylor Marie Wilkinson
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 oxide (K2O) to sodium oxide (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.
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43.发明授权公开(公告)号：US11453610B2
公开(公告)日：2022-09-27
申请号：US17359790
申请日：2021-06-28
Applicant: CORNING INCORPORATED
Inventor： Ryan Claude Andrews , Jill Marie Hall , Pascale Oram , Rostislav Vatchev Roussev , Vitor Marino Schneider , Ljerka Ukrainczyk
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.
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公开(公告)号：US20220267202A1
公开(公告)日：2022-08-25
申请号：US17742461
申请日：2022-05-12
Applicant: CORNING INCORPORATED
Inventor： Timothy Michael Gross , Xiaoju Guo , Jason Thomas Harris , Peter Joseph Lezzi , Alexandra Lai Ching Kao Andrews Mitchell , Pascale Oram , Kevin Barry Reiman , Rostislav Vatchev Roussev , Ljerka Ukrainczyk
IPC: C03C21/00
Abstract: Glass-based articles comprise stress profiles providing improved fracture resistance. The glass-based articles herein provide high fracture resistance after multiple drops.
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公开(公告)号：US11377388B2
公开(公告)日：2022-07-05
申请号：US17306191
申请日：2021-05-03
Applicant: CORNING INCORPORATED
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 μm and 30 μm, or between 8 μm and 15 μm, using the criteria where the magnitude (absolute value) of the slope of the spike is higher than 20 MPa/μm.
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Patent Agency Ranking
公开(公告)号：US20200308046A1
公开(公告)日：2020-10-01
申请号：US16826473
申请日：2020-03-23
Applicant: CORNING INCORPORATED
Inventor： Jaymin Amin , Xiaoju Guo , Pascale Oram , Rostislav Vatchev Roussev , Ljerka Ukrainczyk , Taylor Marie Wilkinson
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.
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公开(公告)号：US10556826B2
公开(公告)日：2020-02-11
申请号：US15777422
申请日：2016-11-18
Applicant: CORNING INCORPORATED
Inventor： Jaymin Amin , Xiaoju Guo , Todd LeRoy Heck , Hongmei Hu , Yuhui Jin , Pascale Oram , Ljerka Ukrainczyk
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.
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48.发明授权公开(公告)号：US10271442B2
公开(公告)日：2019-04-23
申请号：US15482160
申请日：2017-04-07
Applicant: CORNING INCORPORATED
Inventor： Timothy Michael Gross , Xiaoju Guo , Pascale Oram , Kevin Barry Reiman , Rostislav Vatchev Roussev , Vitor Marino Schneider , Trevor Edward Wilantewicz
Abstract: Glass-based article including a first surface and a second surface opposing the first surface defining a thickness (t), and a stress profile are disclosed having a thickness (t) of about 3 millimeters or less, and wherein all points of the stress profile between a thickness range from about 0·t up to 0.3·t and from greater than 0.7·t, comprise a tangent with a slope that is less than about −0.1 MPa/micrometers or greater than about 0.1 MPa/micrometers. Also disclosed are glass-based articles having a thickness (t) in a range of 0.1 mm and 2 mm; and wherein at least one point of the stress profile in a first thickness range from about 0·t up to 0.020·t and greater than 0.98·t comprises a tangent with a slope of from about −200 MPa/micrometer to about −25 MPa/micrometer or about 25 MPa/micrometer to about 200 MPa/micrometer, and wherein all points of the stress profile in a second thickness range from about 0.035·t and less than 0.965·t comprise a tangent with a slope of from about −15 MPa/micrometer to about 15 MPa/micrometer.
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公开(公告)号：US10239784B2
公开(公告)日：2019-03-26
申请号：US14932411
申请日：2015-11-04
Applicant: CORNING INCORPORATED
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 μm and 30 μm, or between 8 μm and 15 μm, using the criteria where the magnitude (absolute value) of the slope of the spike is higher than 20 MPa/μm.
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公开(公告)号：US20180327305A1
公开(公告)日：2018-11-15
申请号：US16043442
申请日：2018-07-24
Applicant: CORNING INCORPORATED
Inventor： Jaymin Amin , Xiaoju Guo , Todd LeROY Heck , Hongmei Hu , Yuhui Jin , Pascale Oram , Ljerka Ukrainczyk
CPC classification number: C03C21/002 , B01J39/02 , B01J39/14 , C03C3/097
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.
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