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公开(公告)号：US20250066244A1
公开(公告)日：2025-02-27
申请号：US18945637
申请日：2024-11-13
Applicant: AGC Inc.
Inventor： Kenji IMAKITA , Shusaku AKIBA
Abstract: A glass for chemical strengthening including, in mol % in terms of oxides: 50% to 65% of SiO2; 15% to 25% of Al2O3; 2% to 10% of B2O3; 0% to 15% of P2O5; 0% to 15% of ZnO; 0% to 10% of MgO; 0% to 15% of CaO; 3% to 15% of Li2O; 2.5% to 15% of Na2O; 0% to 5% of K2O; 0% to 5% of ZrO2; 0% to 5% of Y2O3; and 0% to 5% of TiO2, in which [Li2O]/([Na2O]+[K2O]) is 0.5 to 3.5, and [Al2O3]+[Li2O] is 27% to 35%, provided that in the formulas, [ ] indicates a content of each component described in the parentheses in mol % in terms of oxides.
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公开(公告)号：US20240391826A1
公开(公告)日：2024-11-28
申请号：US18792612
申请日：2024-08-02
Applicant: AGC Inc.
Inventor： Hiroyuki HIJIYA , Takato KAJIHARA , Eriko MAEDA , Shusaku AKIBA , Chieko SUZUKI , Kenji IMAKITA
Abstract: A chemically strengthened glass in which a base glass composition of the chemically strengthened glass includes, in terms of molar percentage based on oxides: 55% to 75% of SiO2; 8% to 20% of Al2O3; 3% to 15% of Li2O; 1% to 5% of Na2O; 0% to 3% of K2O; 0% to 10% of MgO; 0% to 3% of Y2O3; 0% to 3% of ZrO2; 0% to 10% of CaO; 0% to 5% of SrO; 0% to 5% of ZnO; 0% to 3% of TiO2; 0% to 1% of SnO2; 0% to 5% of P2O5; and 0% to 10% of B2O3, a ratio [ZrO2]/([Y2O3]+[ZrO2]) is 0 or more and 0.7 or less, and the total content of Y2O3 and ZrO2 is 0.0% or more and 3.0% or less, and a value of 1nW represented by the Formula (1) is 10 or more and 20 or less.
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公开(公告)号：US20200346969A1
公开(公告)日：2020-11-05
申请号：US16936533
申请日：2020-07-23
Applicant: AGC Inc.
Inventor： Qing LI , Kenji IMAKITA , Akio KOIKE , Eriko MAEDA
IPC: C03C10/00 , C03C4/00 , C03C21/00 , C03B32/02 , C03B23/025
Abstract: The present invention provides crystallized glass of three-dimensional shape for easily producing chemically strengthened glass of three-dimensional shape that resists damage and has exceptional transparency. This crystallized glass of three-dimensional shape: contains crystals; has light transmittance in terms of a thickness of 0.8 mm of 80% or higher; and contains 45-74% SiO2, 1-30% Al2O3, 1-25% Li2O, 0-10% Na2O, 0-5% K2O, a total of 0-15% of SnO2 and/or ZrO2, and 0-12% P2O5, these amounts expressing the oxide-based mass percentage.
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Patent Agency Ranking
公开(公告)号：US20250026676A1
公开(公告)日：2025-01-23
申请号：US18903754
申请日：2024-10-01
Applicant: AGC Inc.
Inventor： Takumi UMADA , Kenji IMAKITA , Yusuke ARAI , Qing LI
Abstract: A chemically strengthened glass sheet in which a value of SB/(SA×t) is 5.0 mm−1 or more, where SA (MPa·μm) is an integrated value of a 5 compressive stress from a surface of the glass sheet to a depth of 10 μm, SB (MPa·μm) is an integrated value of a compressive stress from the depth of 10 μm to DOL which is a depth at which the compressive stress is zero, and t (mm) is a thickness of the glass sheet.
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公开(公告)号：US20220380250A1
公开(公告)日：2022-12-01
申请号：US17663312
申请日：2022-05-13
Applicant: AGC Inc.
Inventor： Satoshi OGAMI , Kenji IMAKITA
Abstract: An inference method includes inferring a value that includes a stress value in a region located 50 μm or shallower from a surface of a chemically strengthened glass, by receiving as input at least a temperature and a time used upon chemical strengthening, and stress values at three or more different depth positions 20 μm or deeper from the surface of the chemically strengthened glass that has been obtained by chemically strengthening a glass having a thickness of 0.2 mm or greater with the temperature and the time.
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公开(公告)号：US20210323862A1
公开(公告)日：2021-10-21
申请号：US17305169
申请日：2021-07-01
Applicant: AGC Inc.
Inventor： Kazuki KANEHARA , Eriko MAEDA , Takumi UMADA , Kenji IMAKITA
Abstract: The present invention relates to a chemically strengthened glass having a sheet shape, having a compressive stress layer on a glass surface, having a compressive stress value on the glass surface of 800 MPa or more, having a sheet thickness (t) of 100 μm or more, having a depth of the compressive stress layer (DOL) of (t×0.1) μm or more, and satisfying: CSB>CSA>0, where DB is a depth in a range of 10 μm or more and not more than DOL from the glass surface, at which a compressive stress value is maximum; CSB is the compressive stress value at the depth DB; DΛ is a depth in a range of equal to or less than DB from the glass surface, at which a compressive stress value is minimum; and CSA is the compressive stress value at the depth DA.
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公开(公告)号：US20210292226A1
公开(公告)日：2021-09-23
申请号：US17341462
申请日：2021-06-08
Applicant: AGC Inc.
Inventor： Takumi UMADA , Kenji IMAKITA , Yusuke ARAI , Tatsuya MIYAJIMA
Abstract: The present invention relates to a glass having a fracture toughness value of 0.85 MPa·m1/2 or more, and including, as represented by molar percentage based on oxides, 40% or more of SiO2, 20% or more of Al2O3, 5% or more of Li2O, and from 1 to 6% in total of one or more selected from Y2O3, La2O3 and Ga2O3. The present invention relates to a glass including, as represented by molar percentage based on oxides, from 40 to 60% of SiO2, from 20 to 45% of Al2O3, and from 5 to 15% of Li2O. Denoting the content of SiO2 as [SiO2] and the content of Al2O3 as [Al2O3], (2×[Al2O3]-X)/[SiO2] is 0 or more and 1 or less.
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公开(公告)号：US20200207660A1
公开(公告)日：2020-07-02
申请号：US16747593
申请日：2020-01-21
Applicant: AGC Inc.
Inventor： Qing LI , Kenji IMAKITA , Akio KOIKE , Eriko MAEDA
Abstract: The purpose of the present invention is to provide a chemically strengthened glass having excellent transparency and strength and being scratch resistant. The present invention pertains to a chemically strengthened glass that: has a compressive stress layer on the surface thereof; has a visible light transmittance of at least 70% when the thickness thereof is converted to 0.8 mm; has a surface compressive stress of at least 600 MPa; has a compressive stress depth of at least 80 μm; and contains a β-spodumene.
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