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公开(公告)号：US20240360028A1
公开(公告)日：2024-10-31
申请号：US18769571
申请日：2024-07-11
Applicant: AGC Inc.
Inventor： Kazuki KANEHARA , Yutaka KUROIWA
CPC classification number: C03C10/0036 , C03C3/062 , C03C3/093 , C03C3/097 , C03C4/00 , C03C2204/00
Abstract: The present invention relates a crystallized glass having a composition that includes, in terms of molar percentage based on oxides: 40% to 70% of SiO2; 7.5% to 30% of Al2O3; 0.5% to 15% of P2O5; 13% to 30% of a total content of one or more selected from SrO and BaO; and 2.5% to 10% of a total content of one or more selected from TiO2 and ZrO2, and including at least one crystal of a celsian crystal and a hexa-celsian crystal.
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公开(公告)号：US20240150226A1
公开(公告)日：2024-05-09
申请号：US18414607
申请日：2024-01-17
Applicant: AGC Inc.
Inventor： Kazuki KANEHARA , Yutaka KUROIWA , Shusaku AKIBA
CPC classification number: C03C10/0054 , C03C10/0027 , 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 difference obtained by subtracting a ratio (mass %) of a content of a crystal contained in the second largest amount on a mass basis from a ratio (mass %) of a content of the lithium disilicate-based crystal is 20 mass % or more.
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公开(公告)号：US20230120488A1
公开(公告)日：2023-04-20
申请号：US18050669
申请日：2022-10-28
Applicant: AGC Inc.
Inventor： Takato KAJIHARA , Shigeki SAWAMURA , Shusaku AKIBA , Yutaka KUROIWA
IPC: B60J1/02 , B32B7/02 , B32B17/10 , B32B27/30 , C03C3/091 , C03C3/087 , C03C3/095 , C03C4/00 , B60J1/00
Abstract: The present invention pertains to a laminated glass for a vehicle, the laminated glass including a first glass sheet, a second glass sheet and an intermediate film sandwiched between the first glass sheet and the second glass sheet, in which: the total thickness of the first glass sheet, the second glass sheet and the intermediate film is 4.0 mm or more; the first glass sheet is formed of a borosilicate glass containing, in terms of oxide by molar percentage, 1.0% or more of B2O3; and when a radio wave (TM wave) with a frequency of 79 [GHz] is made incident at an incident angle of 60° to the first glass sheet, the transmission property S21 is -4.0 [dB] or more.
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公开(公告)号：US20240098891A1
公开(公告)日：2024-03-21
申请号：US18520642
申请日：2023-11-28
Applicant: AGC Inc.
Inventor： Takeyuki KATO , Yutaka KUROIWA , Nobuo INUZUKA , Hirofumi YAMAMOTO
CPC classification number: H05K1/0306 , H05K1/0243 , H05K1/0251 , H01L23/15
Abstract: The present invention relates to a circuit board for a high-frequency device, including: a glass substrate in which a crystal is precipitated and cuttable by etching, and which has a dielectric loss tangent at 20° C. and 10 GHz of 0.0090 or less, and relates to a high-frequency device including the circuit board.
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公开(公告)号：US20230331622A1
公开(公告)日：2023-10-19
申请号：US18331239
申请日：2023-06-08
Applicant: AGC Inc.
Inventor： Rikiya KADO , Takato KAJIHARA , Shigeki SAWAMURA , Shusaku AKIBA , Yutaka KUROIWA
CPC classification number: C03C3/091 , C03C4/16 , B32B17/10036 , C03C23/007 , B32B17/10091 , B32B17/10119 , B32B2250/03 , B32B2250/40 , B32B2307/204 , B32B2307/7376 , B32B2605/00 , B32B2307/304 , B32B2307/412
Abstract: A borosilicate glass includes, in terms of molar percentage based on oxides: 70.0%≤SiO2≤85.0%; 5.0%≤B2O3≤20.0%; 0.0%≤Al2O3≤3.0%; 0.0%≤Li2O≤5.0%; 0.0%≤Na2O≤5.0%; 0.0%≤K2O≤5.0%; 0.0%≤MgO≤5.0%; 0.0%≤CaO≤5.0%; 0.0%≤SrO≤5.0%; 0.0%≤BaO≤5.0%; and 0.06%≤Fe2O3≤1.0%, in which the borosilicate glass has a basicity of 0.485 or more, and [AlO3]/([SiO2]+[B2O3]) of 0.015 or less.
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Patent Agency Ranking
公开(公告)号：US20230322614A1
公开(公告)日：2023-10-12
申请号：US18202825
申请日：2023-05-26
Applicant: AGC Inc.
Inventor： Kazuki KANEHARA , Yutaka KUROIWA
CPC classification number: C03C10/0027 , C03C3/083 , C03C3/091 , C03C3/093 , C03C3/095 , C03C3/097 , C03C10/0054 , C03C21/002 , C03C2204/00 , H05K5/02
Abstract: The present invention relates to a chemically strengthened glass having a thickness of t (unit: µm) and a relative permittivity of 7.0 or less at 20° C. and a frequency of 10 GHz, in which a value of Z determined by the following formula is 0.65 or more, where S1 is an entropy function calculated from an amount of alkali ions in a center portion of the glass, S2 is an entropy function calculated from an average amount of alkali ions from a glass surface to a depth of 0.05t, and X (unit: MPa) is an average value of a compressive stress in a region from the glass surface to the depth of 0.05t: Z = (S2 - S1) × 10 + X/1000.
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公开(公告)号：US20230093194A1
公开(公告)日：2023-03-23
申请号：US18060058
申请日：2022-11-30
Applicant: AGC Inc.
Inventor： Tomonori OGAWA , Yutaka KUROIWA , Kosho AKATSUKA , Hiroyuki HIJIYA
Abstract: A method for producing a high silicate glass substrate, includes: (1) obtaining a glass precursor containing, as represented by mol % based on oxides, 60% to 75% of SiO2, 0% to 15% of Al2O3, 15% to 30% of B2O3, 0% to 3% of P2O5, and 1% to 10% in total of at least one selected from R2O and R′O; (2) applying first heat treatment to the glass precursor to cause phase separation so as to obtain a phase-separated glass; (3) applying acid treatment to the phase-separated glass to make the phase-separated glass porous so as to obtain a porous glass; (4) drying the porous glass so that a rate of change in mass reaches 10% to 50%; and (5) applying second heat treatment to the porous glass to sinter the porous glass so as to obtain a high silicate glass substrate.
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公开(公告)号：US20240375490A1
公开(公告)日：2024-11-14
申请号：US18779802
申请日：2024-07-22
Applicant: AGC Inc.
Inventor： Takato KAJIHARA , Shigeki SAWAMURA , Shusaku AKIBA , Yutaka KUROIWA
IPC: B60J1/02 , B32B7/02 , B32B17/10 , B32B27/30 , B60J1/00 , C03C3/087 , C03C3/091 , C03C3/095 , C03C4/00
Abstract: The present invention pertains to a laminated glass for a vehicle, the laminated glass including a first glass sheet, a second glass sheet and an intermediate film sandwiched between the first glass sheet and the second glass sheet, in which: the total thickness of the first glass sheet, the second glass sheet and the intermediate film is 4.0 mm or more; the first glass sheet is formed of a borosilicate glass containing, in terms of oxide by molar percentage, 1.0% or more of B2O3; and when a radio wave (TM wave) with a frequency of 79 [GHz] is made incident at an incident angle of 60° to the first glass sheet, the transmission property S21 is −4.0 [dB] or more.
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9.发明公开公开(公告)号：US20240116800A1
公开(公告)日：2024-04-11
申请号：US18543883
申请日：2023-12-18
Applicant: AGC Inc.
Inventor： Takato KAJIHARA , Shigeki SAWAMURA , Yutaka KUROIWA
CPC classification number: C03C3/087 , B32B17/10036 , B32B17/10119 , B32B17/10761 , C03C3/091 , B60J1/00
Abstract: A glass plate includes, in terms of molar percentage based on oxides: 70%≤SiO2≤85%; 0.0%≤Al2O3≤10%; 0.0%≤B2O3≤15%; 1.5%≤MgO≤20%; 0.0%≤CaO≤20%; 0.0% 0 SrO≤5.0%; 0.0%≤BaO≤1.0%; 0.0% 0 ZnO≤5.0%; 1.0%≤Li2O≤11%; 0.0%≤Na2O≤10%; 0.0% K2O≤10%; 3.0%≤R2O 11%; 0.01% Fe2O3≤1.00%; and 2.0%≤RO≤20%, in which a temperature T2 at which a glass viscosity is 102 dPa·s is 1,650° C. or lower, a temperature T12 at which a glass viscosity is 1012 dPa·s is 730° C. or lower, a relative dielectric constant (Fr) at a frequency of 10 GHz is 6.5 or less, and a loss tangent (tan δ) at a frequency of 10 GHz is 0.0090 or less.
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公开(公告)号：US20230202907A1
公开(公告)日：2023-06-29
申请号：US18173378
申请日：2023-02-23
Applicant: AGC Inc.
Inventor： Yusaku MATSUO , Hiroyuki HIJIYA , Yuya HAMADA , Yutaka KUROIWA
Abstract: An alkali-free glass includes, as represented by mol % based on oxides: 50 to 80% of SiO2; 2 to 6% of Al2O3; 18 to 35% of B2O3; 1 to 6% of MgO; 0 to 6% of CaO; 0 to 6% of SrO; and 0 to 3% of BaO. A formula (A) is [MgO]+[CaO]+[SrO]+[BaO], and a value of the formula (A) is 2% or more and 6% or less. A formula (B) is [Al2O3]—([MgO]+[CaO]+[SrO]+[BaO]), and a value of the formula (B) is −3% or more and 2% or less.
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