公开(公告)号：US20230082423A1

公开(公告)日：2023-03-16

申请号：US18053820

申请日：2022-11-09

Applicant: AGC Inc.

Inventor： Kazuki KANEHARA ,  Yutaka KUROIWA ,  Shusaku AKIBA ,  Hiroyuki HIJIYA

IPC: C03C3/097 ,  C03C10/00 ,  C03C3/085 ,  C03C3/093 ,  C03C3/091

Abstract: The present invention relates to a glass including, in terms of mole percentage based on oxides: 50.0 to 75.0% of SiO2; 7.5 to 25.0% of Al2O3; 0 to 25.0% of B2O3; 6.5 to 20.0% of Li2O; 1.5 to 10.0% of Na2O; 0 to 4.0% of K2O; 1.0 to 20.0% of MgO; one or more components selected from MgO, CaO, SrO, and BaO in a total amount of 1.0 to 20.0%; and 0 to 5.0% of TiO2, in which a value of Y calculated based on the following formula is 19.5 or less, Y=1.2×([MgO]+[CaO]+[SrO]+[BaO])+1.6×([Li2O]+[Na2O]+[K2O]), provided that [MgO], [CaO], [SrO], [BaO], [Li2O], [Na2O], and [K2O] are contents, in terms of mole percentage based on oxides, of components of MgO, CaO, SrO, BaO, Li2O, Na2O, and K2O respectively.

公开(公告)号：US20220024803A1

公开(公告)日：2022-01-27

申请号：US17449829

申请日：2021-10-04

Applicant: AGC Inc.

Inventor： Hiroyuki HIJIYA ,  Yutaka KUROIWA ,  Kazutaka ONO ,  Tomonori OGAWA ,  Yusaku MATSUO

IPC: C03C3/087 ,  C03B17/06 ,  C03C4/14

Abstract: A glass plate has a dielectric dissipation factor at 10 GHz of tan δA and a glass transition temperature of Tg° C. The glass plate satisfies (tan δ100−tan δA)≥0.0004, where tan δ100 is a dielectric dissipation factor of the glass plate at 10 GHz after having been heated to (Tg+50)° C. and then cooled to (Tg−150)° C. at 100° C./min.

公开(公告)号：US20200031708A1

公开(公告)日：2020-01-30

申请号：US16590573

申请日：2019-10-02

Applicant: AGC Inc.

Inventor： Eriko MAEDA ,  Takato KAJIHARA ,  Kensuke NAGAI ,  Yutaka KUROIWA ,  Osamu KAGAYA ,  Ryuta SONODA ,  Hiroyuki HIJIYA

IPC: C03C3/108 ,  C03C3/105 ,  C03C3/093 ,  C03C3/087

Abstract: To provide a glass plate for a window material and a window comprising the glass plate, which are less likely to be a barrier to radio transmitting/receiving in use of a radio-utilizing apparatus, and a radio communication apparatus comprising the glass plate.A glass plate having a radio transmittance of at least 20% at a frequency of 100 GHz as calculated as 18 mm thickness, a window comprising the glass plate, and a radio communication apparatus comprising the glass plate.

公开(公告)号：US20240150225A1

公开(公告)日：2024-05-09

申请号：US18414585

申请日：2024-01-17

Applicant: AGC Inc.

Inventor： Kazuki KANEHARA ,  Yutaka KUROIWA ,  Shusaku AKIBA

IPC: C03C10/00 ,  C03B32/02 ,  C03C21/00

CPC classification number: C03C10/0027 ,  C03B32/02 ,  C03C21/002

Abstract: The present invention relates to a glass ceramic, in which a crystal contained in the largest amount on a mass basis is a lithium disilicate-based crystal, and a ratio of Li ions in Li ion sites of the lithium disilicate-based crystal is less than 95%. The glass ceramic may have a light transmittance in terms of a thickness of 0.7 mm of 85% or more in a wavelength range of 400 nm to 1,000 nm.

公开(公告)号：US20240150224A1

公开(公告)日：2024-05-09

申请号：US18413369

申请日：2024-01-16

Applicant: AGC Inc.

Inventor： Kazuki KANEHARA ,  Yutaka KUROIWA ,  Shusaku AKIBA

IPC: C03C10/00 ,  C03C4/16 ,  C03C21/00 ,  H05K5/03

CPC classification number: C03C10/0009 ,  C03C4/16 ,  C03C21/002 ,  H05K5/03 ,  C03C2204/00

Abstract: The present invention relates to a glass ceramic including: a lithium disilicate-based crystal; and an SiO2-based crystal, in which a content of the lithium disilicate-based crystal and a content of the SiO2-based crystal are both equal to or greater than a content of crystal other than the lithium disilicate-based crystal and the SiO2-based crystal on a mass basis.

公开(公告)号：US20240101467A1

公开(公告)日：2024-03-28

申请号：US18520651

申请日：2023-11-28

Applicant: AGC Inc.

Inventor： Takeyuki KATO ,  Yutaka KUROIWA ,  Nobuo INUZUKA ,  Hirofumi YAMAMOTO

IPC: C03C4/04 ,  C03B32/02 ,  C03C3/095 ,  C03C15/00 ,  H05K1/02 ,  H05K1/03

CPC classification number: C03C4/04 ,  C03B32/02 ,  C03C3/095 ,  C03C15/00 ,  H05K1/0237 ,  H05K1/0306 ,  C03C2204/00

Abstract: The present invention relates to a photosensitive glass in which a Li2SiO3 crystal is precipitated by exposure and heat treatment, in which the photosensitive glass has a value of Formula (A) described below of 0.50 or more and 0.75 or less, and the photosensitive glass has a dielectric loss tangent at 20° C. and 10 GHz of 0.0090 or less, [Li2O]/([Li2O]+[Na2O]+[K2O]) Formula (A), in Formula (A), [Li2O], [Na2O], and [K2O] respectively indicate contents of Li2O, Na2O, and K2O in the photosensitive glass in terms of mole percentage based on oxides.

公开(公告)号：US20230348315A1

公开(公告)日：2023-11-02

申请号：US18331230

申请日：2023-06-08

Applicant: AGC Inc.

Inventor： Takato KAJIHARA ,  Shigeki SAWAMURA ,  Rikiya KADO ,  Yutaka KUROIWA ,  Shusaku AKIBA

IPC: C03C3/089 ,  C03C3/097 ,  C03C3/087 ,  C03C3/091 ,  C03C3/093 ,  B32B17/10

CPC classification number: C03C3/097 ,  B32B17/10036 ,  B32B17/1055 ,  C03C3/087 ,  C03C3/089 ,  C03C3/091 ,  C03C3/093 ,  B32B2307/204 ,  B32B2307/412 ,  B32B2307/54 ,  B32B2307/72 ,  B32B2307/734 ,  B32B2307/7376 ,  B32B2605/00

Abstract: A glass plate includes, in terms of molar percentage based on oxides: 50% ≤ SiO2 ≤ 80%; 5.0% ≤ Al2O3 ≤ 10%; 5.0% 0.0%; and 0.30

公开(公告)号：US20230212062A1

公开(公告)日：2023-07-06

申请号：US18184114

申请日：2023-03-15

Applicant: AGC Inc.

Inventor： Kazuki KANEHARA ,  Yutaka KUROIWA

IPC: C03C10/00 ,  C03C3/097 ,  G02F1/13 ,  C03C3/085

CPC classification number: C03C10/0045 ,  C03C3/097 ,  G02F1/13 ,  C03C3/085 ,  C03C2214/20 ,  C03C2203/52

Abstract: The present invention relates to a crystallized glass including: at least one crystal of indialite and cordierite, in which the crystallized glass has a total amount of the crystal is 40 mass % or more of the crystallized glass, and the crystal comprises at least one of a vacancy and a different element at an Al site.

公开(公告)号：US20220363038A1

公开(公告)日：2022-11-17

申请号：US17874221

申请日：2022-07-26

Applicant: AGC Inc.

Inventor： Nobutaka KIDERA ,  Kazuhiko NIWANO ,  Shoichi TAKEUCHI ,  Tetsuo ABE ,  Yutaka KUROIWA

IPC: B32B17/10 ,  B32B3/18 ,  B32B7/023 ,  B32B7/025

Abstract: A laminated glass according to an embodiment of the present invention includes a first glass plate, a second glass plate, and an interlayer film held between the first glass plate and the second glass plate. When a relative dielectric constant of the first glass plate is represented by εg1; a relative dielectric constant of the second glass plate is represented by εg2; a relative dielectric constant of a first interlayer film provided in a first region of the interlayer film is represented by εm1; a reflection coefficient at an interface between the first glass plate and the first interlayer film is represented by Γ1; and a reflection coefficient at an interface between the second glass plate and the first interlayer film is represented by Γ2, the reflection coefficients Γ1 and Γ2 satisfy relations 0.0≤Γ1≤0.2 and 0.0≤Γ2≤0.2.