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1.发明授权公开(公告)号：US12297142B2
公开(公告)日：2025-05-13
申请号：US18588038
申请日：2024-02-27
Applicant: AGC Inc.
Inventor： Kenji Imakita , Suguru Murayama
Abstract: A plate-like chemically strengthened glass having a compression stress layer on the surface of the glass, wherein the compressive stress value (CS0) at the glass surface of is 500 MPa or more, the plate thickness (t) is 400 μm or more, the compressive stress depth of layer (DOL) is (t×0.15) μm or more, the compressive stress values (CS1) and (CS2) when the depth from the glass surface is ¼ and ½, respectively, are 50 MPa or more, m1 expressed by {m1=(CS1−CS2/(DOL/4−DOL/2)} is −1.5 MPa/μm or more, m2 expressed by {m2=(CS2/(DOL/2−DOL)} is 0 MPa/μm or less, and m2 is less than m1.
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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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公开(公告)号：US10370287B2
公开(公告)日：2019-08-06
申请号：US15920009
申请日：2018-03-13
Applicant: AGC Inc.
Inventor： Suguru Murayama , Seiki Ohara , Qing Li , Shusaku Akiba
Abstract: A glass for chemical strengthening contains, in mole percentage on an oxide basis, 58 to 72% of SiO2, 7 to 18% of Al2O3, 1% or more of B2O3, 0 to 4% of P2O5, 5 to 16% of Li2O, 0 to 7% of Na2O, 0 to 2% of K2O, 0 to 6% of MgO, 0 to 20% of CaO, 0 to 20% of SrO, 0 to 15% of BaO, 0 to 10% of ZnO, 0 to 1% of TiO2, and 0 to 2% of ZrO2. A value of X is 30000 or more. The value of X is calculated based on the formula, X=SiO2×329+Al2O3×786+B2O3×627+P2O5×(−941)+Li2O×927+Na2O×47.5+K2O×(−371)+MgO×1230+CaO×1154+SrO×733+ZrO2×51.8, by using the contents in mole percentage on an oxide basis of components.
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公开(公告)号：US11535548B2
公开(公告)日：2022-12-27
申请号：US16386317
申请日：2019-04-17
Applicant: AGC INC.
Inventor： Suguru Murayama , Satoshi Kanasugi , Madoka Ono
IPC: C03C3/083 , C03B23/03 , C03C3/085 , C03C3/087 , C03C3/091 , C03C3/093 , C03C3/097 , C03C21/00 , C03B23/035 , C03B23/025
Abstract: A glass for chemical strengthening has a Young's modulus E of 70 GPa or more. The glass satisfies X1+X2+X3 being 1760 or less. Here, X1 is a numerical value equivalent to a value [unit: kPa/° C.] obtained by multiplying the Young's modulus E by an average coefficient α of thermal expansion at 50° C. to 350° C., X2 is a numeral value equivalent to a value of a temperature Tf [unit: ° C.] at which a viscosity of the glass reaches 100 MPa·s, and X3 is a numerical value equivalent to a value of a difference [unit: 105 Pa·s] between the viscosity (100 MPa·s) at the Tf and a viscosity η+10 at a temperature 10° C. higher than the Tf.
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公开(公告)号：US11312656B2
公开(公告)日：2022-04-26
申请号：US16585200
申请日：2019-09-27
Applicant: AGC Inc.
Inventor： Kenji Imakita , Suguru Murayama , Izuru Kashima , Kazuki Kanehara
Abstract: The present invention relates to a chemically strengthened glass satisfying A1 [MPa] of 600 or more, A2 [MPa] of 50 or more, B1 [μm] of 6 or less, B2 [μm] of 10% or more of t [μm], C [MPa] of −30 or less, and A1/B1 [MPa/μm] of 100 or more when the chemically strengthened glass has a thickness t [μm] and a profile of a stress value [MPa] at a depth x [μm] from a glass surface is approximated by an error least-squares method in a region of 0 A2 and B1
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Patent Agency Ranking
公开(公告)号：US11767252B2
公开(公告)日：2023-09-26
申请号：US17024109
申请日：2020-09-17
Applicant: AGC Inc.
Inventor： Suguru Murayama , Seiki Ohara , Qing Li , Shusaku Akiba
CPC classification number: C03C3/085 , C03C3/083 , C03C3/087 , C03C3/091 , C03C3/093 , C03C3/097 , C03C4/18 , C03C21/00 , C03C21/002
Abstract: A glass for chemical strengthening contains, in mole percentage on an oxide basis, 58 to 80% of SiO2, 13 to 18% of Al2O3, 0 to 5% of B2O3, 0.5 to 4% of P2O5, 4 to 10% of Li2O, 5 to 14% of Na2O, 0 to 2% of K2O, 0 to 11% of MgO, 0 to 5% of CaO, 0 to 20% of SrO, 0 to 15% of BaO, 0 to 10% of ZnO, 0 to 1% of TiO2, and 0 to 2% of ZrO2. A value of X is 30000 or more. The value of X is calculated based on the formula, X=SiO2×329+Al2O3×786+B2O3×627+P2O5×(−941)+Li2O×927+Na2O×47.5+K2O×(−371)+MgO×1230+CaO×1154+SrO×733+ZrO2×51.8, by using the contents in mole percentage on an oxide basis of components.
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公开(公告)号：US11572305B2
公开(公告)日：2023-02-07
申请号：US16911878
申请日：2020-06-25
Applicant: AGC Inc.
Inventor： Suguru Murayama , Kazuki Kanehara , Eriko Maeda
Abstract: The present invention relates to a glass for chemical strengthening including, in mole percentage on an oxide basis: 45 to 75% of SiO2; 1 to 30% of Al2O3; 1 to 20% of Li2O; 0 to 5% of Y2O3; 0 to 5% of ZrO2; and 0 to 1% of TiO2, having a total content of one or more kinds of MgO, CaO, SrO, BaO and ZnO of 1 to 20%, having a total content of Na2O and K2O of 0 to 10%, having a total content of B2O3 and P2O5 of 0 to 10%, and having a value M expressed by the following expression of 1,000 or more: M=−5×[SiO2]+121×[Al2O3]+50×[Li2O]−35×[Na2O]+32×[K2O]+85×[MgO]+54×[CaO]−41×[Sr O]−4×[P2O5]+218×[Y2O3]+436×[ZrO2]−1180, in which each of [SiO2], [Al2O3], [Li2O], [Na2O], [K2O], [MgO], [CaO], [SrO], [P2O5], [Y2O3], and [ZrO2] designates a content of each component in mole percentage on an oxide basis.
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公开(公告)号：US10384974B2
公开(公告)日：2019-08-20
申请号：US15908227
申请日：2018-02-28
Applicant: AGC Inc.
Inventor： Suguru Murayama , Seiki Ohara , Qing Li , Shusaku Akiba
Abstract: A glass for chemical strengthening contains, in mole percentage on an oxide basis, 58 to 80% of SiO2, 13 to 18% of Al2O3, 0 to 5% of B2O3, 0.5 to 4% of P2O5, 4 to 10% of Li2O, 5 to 14% of Na2O, 0 to 2% of K2O, 0 to 11% of MgO, 0 to 5% of CaO, 0 to 20% of SrO, 0 to 15% of BaO, 0 to 10% of ZnO, 0 to 1% of TiO2, and 0 to 2% of ZrO2. A value of X is 30000 or more. The value of X is calculated based on the formula, X=SiO2×329+Al2O3×786+B2O3×627+P2O5×(−941)+Li2O×927+Na2O×47.5+K2O×(−371)+MgO×1230+CaO×1154+SrO×733+ZrO2×51.8, by using the contents in mole percentage on an oxide basis of components.
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公开(公告)号：US20190194057A1
公开(公告)日：2019-06-27
申请号：US16291407
申请日：2019-03-04
Applicant: AGC Inc.
Inventor： Suguru Murayama , Seiki Ohara , Qing Li , Shusaku Akiba
CPC classification number: C03C3/085 , C03C3/083 , C03C3/087 , C03C3/091 , C03C3/093 , C03C3/097 , C03C4/18 , C03C21/00 , C03C21/002
Abstract: A glass for chemical strengthening contains, in mole percentage on an oxide basis, 58 to 80% of SiO2, 13 to 18% of Al2O3, 0 to 5% of B2O3, 0.5 to 4% of P2O5, 4 to 10% of Li2O, 5 to 14% of Na2O, 0 to 2% of K2O, 0 to 11% of MgO, 0 to 5% of CaO, 0 to 20% of SrO, 0 to 15% of BaO, 0 to 10% of ZnO, 0 to 1% of TiO2, and 0 to 2% of ZrO2. A value of X is 30000 or more. The value of X is calculated based on the formula, X=SiO2×329+Al2O3×786+B2O3×627+P2O5×(−941)+Li2O×927+Na2O×47.5+K2O×(−371)+MgO×1230+CaO×1154+SrO×733+ZrO2×51.8, by using the contents in mole percentage on an oxide basis of components.
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公开(公告)号：US12281039B2
公开(公告)日：2025-04-22
申请号：US18316524
申请日：2023-05-12
Applicant: AGC Inc.
Inventor： Kenji Imakita , Suguru Murayama , Izuru Kashima , Kazuki Kanehara
Abstract: The present invention relates to a chemically strengthened glass satisfying A1 [MPa] of 600 or more, A2 [MPa] of 50 or more, B1 [μm] of 6 or less, B2 [μm] of 10% or more of t [μm], C [MPa] of −30 or less, and A1/B1 [MPa/μm] of 100 or more when the chemically strengthened glass has a thickness t [μm] and a profile of a stress value [MPa] at a depth×[μm] from a glass surface is approximated by an error least-squares method in a region of 0 A2 and B1
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