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公开(公告)号：US11274058B2
公开(公告)日：2022-03-15
申请号：US16747586
申请日：2020-01-21
Applicant: AGC Inc.
Inventor： Qing Li , Akio Koike , Kazuki Kanehara
Abstract: A crystallized glass that: has a visible light transmittance of at least 85% when the thickness thereof is converted to 0.8 mm; has a haze value of no more than 1.0% when the thickness thereof is converted to 0.8 mm; contains, in terms of mass % on an oxide basis, 58%-70% SiO2, 15%-30% Al2O3, 2%-10% Li2O, 0%-5% Na2O, 0%-2% K2O, 0%-1.8% SrO, 0%-2% BaO, 0.5%-6% SnO2, 0.5%-6% ZrO2, and 0%-6% P2O5; has a total SrO and BaO content of 0.1%-3%; and has a total Na2O and K2O content of 1%-5%.
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2.发明申请公开(公告)号：US20200156994A1
公开(公告)日：2020-05-21
申请号：US16747584
申请日：2020-01-21
Applicant: AGC Inc.
Inventor： Qing Li , Akio Koike , Eriko Maeda
Abstract: The present invention pertains to a glass for strengthening, that: has an average transmittance of at least 70% when converted to a thickness of 0.8 mm at a wavelength of 380-780 nm; has a haze value of no more than 0.7% when converted to a thickness of 0.8 mm in a C light source; has a Young's modulus of at least 85 GPa; has a fracture toughness value of at least 0.90 MPa·m1/2; a thermal conductivity at 20° C. of at least 1.3 W/m·K; and comprises a lithium aluminosilicate crystallized glass.
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公开(公告)号：US12240779B2
公开(公告)日：2025-03-04
申请号：US17525554
申请日：2021-11-12
Applicant: AGC Inc.
Inventor： Qing Li , Kenji Imakita , Akio Koike , Eriko Maeda
IPC: C03C10/00 , C03B23/025 , C03B32/02 , C03C4/00 , C03C21/00
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：US12024464B2
公开(公告)日：2024-07-02
申请号：US17034172
申请日：2020-09-28
Applicant: AGC Inc.
Inventor： Suguru Murayama , Akio Koike
CPC classification number: C03C3/091 , C03C3/085 , C03C3/087 , C03C3/093 , C03C21/002
Abstract: The purpose of the present invention is to provide a glass for chemical strengthening that exhibits a high strength after chemical strengthening and is resistant to devitrification. The present invention relates to a glass for chemical strengthening that contains, expressed as mol % on an oxide basis, 55 to 70% SiO2, 10 to 25% Al2O3, 1 to 20% Li2O, 0 to 8% CaO, 0 to 8% SrO, and 0 to 5% ZrO2, in which the sum of the contents of CaO and SrO is 1.5 to 10%, the sum of the contents of Na2O and K2O is 3 to 11%, and the value X given by the formula ([Li2O]+[K2O])/[Al2O3] is 0.1 to 1.1.
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5.发明授权公开(公告)号：US11718556B2
公开(公告)日：2023-08-08
申请号：US16747584
申请日：2020-01-21
Applicant: AGC Inc.
Inventor： Qing Li , Akio Koike , Eriko Maeda
CPC classification number: C03C21/002 , C03C3/083 , C03C4/0028 , C03C10/0027
Abstract: The present invention pertains to a glass for strengthening, that: has an average transmittance of at least 70% when converted to a thickness of 0.8 mm at a wavelength of 380-780 nm; has a haze value of no more than 0.7% when converted to a thickness of 0.8 mm in a C light source; has a Young's modulus of at least 85 GPa; has a fracture toughness value of at least 0.90 MPa·m1/2; a thermal conductivity at 20° C. of at least 1.3 W/m·K; and comprises a lithium aluminosilicate crystallized glass.
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公开(公告)号：US20190352227A1
公开(公告)日：2019-11-21
申请号：US16531550
申请日：2019-08-05
Applicant: AGC Inc.
Inventor： Akio Koike , Yusuke Kobayashi
Abstract: A chemically strengthened glass includes a compressive stress layer. A compressive stress is 200 MPa or more at a surface of the chemically strengthened glass. A depth in the compressive stress layer at which the compressive stress is 50 MPa from the surface is 50 μm or more. A depth in the compressive stress layer at which the compressive stress is 30 MPa from the surface is 60 μm or more. A critical stress intensity factor KIC is 0.75 MPa·m1/2 or more.
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公开(公告)号：US11731901B2
公开(公告)日：2023-08-22
申请号：US16747593
申请日：2020-01-21
Applicant: AGC Inc.
Inventor： Qing Li , Kenji Imakita , Akio Koike , Eriko Maeda
CPC classification number: C03C21/002 , B32B17/10 , C03B32/02 , C03C4/0028 , C03C4/18 , C03C10/0027 , C03C10/0054 , C03C2204/00
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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公开(公告)号：US11028015B2
公开(公告)日：2021-06-08
申请号：US16729839
申请日：2019-12-30
Applicant: AGC Inc.
Inventor： Akio Koike , Makoto Katsuta , Suguru Murayama , Kenji Imakita
Abstract: A glass ball has a density of 2.3 to 3.2 g/cm3, a Young's modulus of 60 to 150 GPa, and an average coefficient of thermal expansion at 50 to 350° C. being 40×10−7 to 120×10−7/° C. The glass ball is formed of a glass material including, as represented by mole percentage based on oxides, 30 to 75 mol % of SiO2, 2 to 30 mol % of Al2O3, and 5 to 25 mol % of R2O, where R is at least one kind selected from Li, Na and K. The glass ball includes a compressive stress layer in a surface thereof.
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