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11.发明授权公开(公告)号：US11365149B2
公开(公告)日：2022-06-21
申请号：US16440305
申请日：2019-06-13
Applicant: AGC INC.
Inventor： Suguru Murayama , Yuriko Banno
Abstract: A chemically strengthened glass having a thickness t of 2 mm or less, having a compressive stress value (CS90) at a portion of 90 μm deep from a glass surface being 25 MPa or more, and satisfying a number of fragments generated within a size of 25 mm×25 mm being 20 or less in a fracture test according to an indenter indentation test under a condition of holding a load ranging from 5 kgf to 10 kgf for 15 seconds with a pyramidal diamond indenter having an indenter angle of a facing angle of 60°.
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公开(公告)号：US10472272B2
公开(公告)日：2019-11-12
申请号：US16033787
申请日：2018-07-12
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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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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公开(公告)号：US11827560B2
公开(公告)日：2023-11-28
申请号：US18068547
申请日：2022-12-20
Applicant: AGC Inc.
Inventor： Suguru Murayama , Kazuki Kanehara , Eriko Maeda
CPC classification number: C03C21/002 , C03C3/078 , C03C3/087 , C03C3/093 , C03C3/095 , C03C3/097 , C03C2201/3411
Abstract: The present invention relates to a glass for chemical strengthening including, in mole percentage on an oxide basis: 60 to 72% of SiO2; 9 to 20% of Al2O3; 1 to 15% of Li2O; 0.1 to 5% of Y2O3; 0 to 1.5% 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 10%, having a total content of Na2O and K2O of 1.5 to 10%, having a total content of B2O3 and P2O5 of 0 to 10%, wherein a ratio ([Al2O3]+[Li2O])/([Na2O]+[K2O]+[MgO]+[CaO]+[SrO]+[BaO]+[ZnO]+[ZrO2]+[Y2O3]) is from 0.7 to 3, wherein a ratio [MgO])/([CaO]+[SrO]+[BaO]+[ZnO]) is from 10 to 45, and having a value M expressed by the following expression of 1,100 or more:
M=−5×[SiO2]+121×[Al2O3]+50×[Li2O]−35×[Na2O]+32×[K2O]+85×[MgO]+54×[CaO]−41×[SrO]−4×[P2O5]+218×[Y2O3]+436×[ZrO2]−1180,
wherein 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.-
公开(公告)号：US11718557B2
公开(公告)日：2023-08-08
申请号：US17692335
申请日：2022-03-11
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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16.发明授权公开(公告)号：US11639308B2
公开(公告)日：2023-05-02
申请号：US16710167
申请日：2019-12-11
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：US20200039876A1
公开(公告)日：2020-02-06
申请号：US16585200
申请日：2019-09-27
Applicant: AGC Inc.
Inventor： Kenji IMAKITA , Suguru Murayama , lzuru 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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