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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：US20190062204A1
公开(公告)日：2019-02-28
申请号：US16171556
申请日：2018-10-26
Applicant: AGC INC.
Inventor： Kosho AKATSUKA , Satoshi OGAMI
Abstract: The present invention relates to a chemically strengthened glass, in which CT1 and CT5 satisfy CT5/CT1≤0.85, the CT1 satisfies CT1>−38.7×ln(t/1000)+48.2 [MPa] and an internal energy density rE satisfies rE≤23.3×t/1000+15 [kJ/m2]. CS is a surface compressive stress value [MPa], σ (x) is a compressive stress value [MPa] at a position x in a depth direction, DOL is a compressive stress depth [μm], and t is a sheet thickness [μm].
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公开(公告)号：US20250051213A1
公开(公告)日：2025-02-13
申请号：US18931185
申请日：2024-10-30
Applicant: AGC Inc.
Inventor： Satoshi OGAMI
IPC: C03B32/00
Abstract: A glass plate (a glass plate for cover glasses) with a low concentration of impurities is produced using article cullet. A process of melting glass raw materials and cullet and producing therefrom a glass plate is repeated. The glass plate is further processed into a glass article. The glass article is a cover glass for displays, including the glass plate and a coating provided on a surface of the glass plate. The cullet used includes glass plate cullet that is cullet of the glass plate and article cullet that is cullet of the article cullet. At least one of the mixing ratio of the glass raw material, the mixing ratio of the glass plate cullet, the mixing ratio of the article cullet, the impurity concentration in the glass plate cullet and the impurity concentration in the article cullet is adjusted in accordance with at least one of the impurity concentration in the glass plate cullet and the impurity concentration in the article cullet.
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公开(公告)号：US20230086147A1
公开(公告)日：2023-03-23
申请号：US18057784
申请日：2022-11-22
Applicant: AGC INC.
Inventor： Shusaku AKIBA , Masao OZEKI , Satoshi TAKEDA , Satoshi KANASUGI , Satoshi OGAMI
Abstract: A sensor module includes: a base member; at least one of a single or a plurality of sensors and vibrators arranged on the base member, and a protective member constituted of at least one flat surface or a curved surface, provided so as to cover the at least one of the sensors and the vibrators. A part or whole of the protective member is formed of a strengthened glass and the strengthened glass is a chemically strengthened glass or a physically strengthened glass.
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公开(公告)号：US20210101830A1
公开(公告)日：2021-04-08
申请号：US17124183
申请日：2020-12-16
Applicant: AGC Inc.
Inventor： Satoshi OGAMI
IPC: C03C21/00
Abstract: A chemically strengthened glass obtained by chemically strengthening a lithium-containing aluminosilicate glass, when representing a sheet thickness of the chemically strengthened glass by t (μm) and an internal stress at a depth x (μm) from a surface of the chemically strengthened glass by σ(x) (MPa), has a value of a ratio C=rE/rElimit being greater than or equal to 0.7 and less than 1.0 where rE (kJ/m2) is calculated from Expression (3) described above and rElimit=16×t/1000+3.
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Patent Agency Ranking
公开(公告)号：US20190219463A1
公开(公告)日：2019-07-18
申请号：US16363010
申请日：2019-03-25
Applicant: ORIHARA INDUSTRIAL CO., LTD.. , AGC Inc.
Inventor： Shuji ORIHARA , Yoshio ORIHARA , Satoshi OGAMI , Seiji INABA
CPC classification number: G01L1/24 , C03C21/002 , G01L1/00
Abstract: A stress measurement device for strengthened glass includes a polarization phase difference variable member configured to vary a polarization phase difference of a laser light by one wavelength of the laser light or more; an imaging element configured to image a plurality of times at a predetermined time interval a scattered light emitted according to the laser light with the varied polarization phase difference entering the strengthened glass, and obtain a plurality of images; and an arithmetic unit configured to measure a periodic change in luminance of the scattered light using the plurality of images, calculate a change in a phase of the change in luminance, and calculate a stress distribution in a depth direction from a surface of the strengthened glass based on the change in the phase.
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公开(公告)号：US20190062206A1
公开(公告)日：2019-02-28
申请号：US16173416
申请日：2018-10-29
Applicant: AGC Inc.
Inventor： Satoshi OGAMI , Yoshitaka SAIJO
IPC: C03C21/00
Abstract: A strengthened glass plate includes: a first functional layer that is provided in a first main surface of the strengthened glass plate; and a second functional layer that is provided in a second main surface of the strengthened glass plate. When a stress in a tensile stress layer is designated as CT, the following relation regarding the CT is satisfied: CT>0.8×[−38.7×ln(t/1000)+48.2], where t is a plate thickness [μm], CS is a compressive stress [MPa] in an outermost surface, and DOL is a depth [μm] from a glass surface to a point where the compressive stress reaches zero in a thickness direction.
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公开(公告)号：US20230271878A1
公开(公告)日：2023-08-31
申请号：US18172432
申请日：2023-02-22
Applicant: AGC Inc.
Inventor： Satoshi OGAMI , Yusuke KATAOKA , Yusuke FUJIWARA
CPC classification number: C03C21/002 , C03B32/02 , C03C10/0027
Abstract: The present invention relates to a chemically strengthened glass, satisfying in comparison of an estimated stress profile with an effective stress profile, an absolute value of a difference between tensile stress values at a center in a thickness direction is 30 MPa or smaller, and a value obtained by subtracting, at a depth of 15 μm from a chemically strengthened surface of the glass, a compressive stress value of the effective stress profile from a compressive stress value of the estimated stress profile is 50 MPa or larger.
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公开(公告)号：US20230192534A1
公开(公告)日：2023-06-22
申请号：US18109851
申请日：2023-02-14
Applicant: AGC Inc.
Inventor： Shigeki SAWAMURA , Eriko MAEDA , Shusaku AKIBA , Satoshi OGAMI
IPC: C03C10/00
CPC classification number: C03C10/0027
Abstract: The present invention relates to a glass ceramic having a lithium aluminosilicate composition and including a crystal and a residual glass, in which the residual glass has a composition including, in terms of mol % based on oxides: 25% to 70% of SiO2; 3% to 35% of Al2O3; 0.1% to 20% of Li2O; 0.1% to 20% of Na2O; 0% to 10% of K2O; and 1% to 15% of ZrO2, and a parameter V is −600 or more and 720 or less, the parameter V being calculated based on the following formula: V=49.589×[SiO2]+61.806×[Al2O3]+45.456×[P2O5]+41.151×[MgO]+110.26×[CaO]+50.263×[SrO]+55.693×[Li2O]+3.598×[Na2O]+9.503×[K2O]+6.83×[TiO2]−2.885×[ZrO2]−3746.99.
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公开(公告)号：US20220003576A1
公开(公告)日：2022-01-06
申请号：US17476601
申请日：2021-09-16
Applicant: AGC INC.
Inventor： Shusaku AKIBA , Masao OZEKI , Satoshi TAKEDA , Satoshi KANASUGI , Satoshi OGAMI
Abstract: A sensor module includes: a base member; at least one of a single or a plurality of sensors and vibrators arranged on the base member; and a protective member constituted of at least one flat surface or a curved surface, provided so as to cover the at least one of the sensors and the vibrators. A part or whole of the protective member is formed of a strengthened glass and the strengthened glass is a chemically strengthened glass or a physically strengthened glass.
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