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Patent Agency Ranking
公开(公告)号：US12269769B2
公开(公告)日：2025-04-08
申请号：US18737352
申请日：2024-06-07
Applicant: AGC INC.
Inventor： Kaname Sekiya , Yusuke Fujiwara
Abstract: The present invention relates to a chemically strengthened glass having a thickness t (mm), in which a first-order derivative CSx′ of a stress value CSx (MPa) is −4.7 or larger in a range of CSx≥0 in a profile of the stress value CSx (MPa), in which the stress value CSx (MPa) is a function of depth x (μm) from a glass surface, and in which the stress value CSx (MPa) is measured by a scattered light photoelastic stress meter, and a manufacturing method thereof.
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公开(公告)号：US11198642B2
公开(公告)日：2021-12-14
申请号：US16251963
申请日：2019-01-18
Applicant: AGC INC.
Inventor： Izuru Kashima , Kaname Sekiya , Akio Shizukai , Yositeru Ikeda , Shogo Sueda
Abstract: The present invention relates to a method for producing a chemically strengthened glass, the method including, performing a chemical strengthening treatment including the following steps (1) to (3) to a glass having a specific composition, (1) a step of bringing the glass into contact with an inorganic salt composition including 70 mass % or more of potassium nitrate to perform ion exchange; (2) a step of bringing the glass having been ion-exchanged in step (1) into contact with an inorganic salt composition including 50 mass % or more of sodium nitrate to perform ion exchange; and (3) a step of bringing the glass having been ion-exchanged in step (2) into contact with an inorganic salt composition including 70 mass % or more of potassium nitrate to perform ion exchange.
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公开(公告)号：US12065376B2
公开(公告)日：2024-08-20
申请号：US17652543
申请日：2022-02-25
Applicant: AGC INC.
Inventor： Kaname Sekiya , Yusuke Fujiwara
CPC classification number: C03C21/002 , C03C3/083 , C03C4/18 , C03C2204/00
Abstract: The present invention relates to a chemically strengthened glass having a thickness t (mm), in which a first-order derivative CSx′ of a stress value CSx (MPa) is −4.7 or larger in a range of CSx≥0 in a profile of the stress value CSx (MPa), in which the stress value CSx (MPa) is a function of depth×(μm) from a glass surface, and in which the stress value CSx (MPa) is measured by a scattered light photoelastic stress meter, and a manufacturing method thereof.
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公开(公告)号：US11548815B2
公开(公告)日：2023-01-10
申请号：US17388494
申请日：2021-07-29
Applicant: AGC Inc.
Inventor： Kaname Sekiya , Yusuke Fujiwara
Abstract: The present invention relates to a chemically strengthened glass having a thickness of t [mm], and having a profile of a stress value CSx [MPa] at a depth x [μm] from a surface of the glass, the stress value being measured by a scattered-light photoelastic stress meter, in which a second-order differential value CSx″ of the stress value CSx in the profile satisfies the following expression within a range of CSx≥0: 0
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公开(公告)号：US20190225537A1
公开(公告)日：2019-07-25
申请号：US16251963
申请日：2019-01-18
Applicant: AGC INC.
Inventor： Izuru KASHIMA , Kaname Sekiya , Akio Shizukai , Yositeru Ikeda , Shogo Sueda
Abstract: The present invention relates to a method for producing a chemically strengthened glass, the method including, performing a chemical strengthening treatment including the following steps (1) to (3) to a glass having a specific composition, (1) a step of bringing the glass into contact with an inorganic salt composition including 70 mass % or more of potassium nitrate to perform ion exchange; (2) a step of bringing the glass having been ion-exchanged in step (1) into contact with an inorganic salt composition including 50 mass % or more of sodium nitrate to perform ion exchange; and (3) a step of bringing the glass having been ion-exchanged in step (2) into contact with an inorganic salt composition including 70 mass % or more of potassium nitrate to perform ion exchange.
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