公开(公告)号：US20190241461A1

公开(公告)日：2019-08-08

申请号：US16388208

申请日：2019-04-18

Applicant: AGC Inc.

Inventor： Hiroyuki HIJIYA ,  Kensuke NAGAI

IPC: C03C3/095 ,  C03C3/087 ,  C03C4/08

CPC classification number: C03C3/095 ,  C03C3/087 ,  C03C4/08 ,  C03C2204/00

Abstract: A soda lime glass plate has, on the basis of oxides, a total sulfur content in terms of SO3 of 0.001 to 0.2% in mass %, a total iron content in terms of Fe2O3 of 0.15 to 0.4% in mass %, and a total tin content in terms of SnO2 of 0.02 to 1% in mass %, and has a mass proportion of a divalent iron in terms of Fe2O3 in the total iron in terms of Fe2O3 of 45 to 70%. The soda lime glass plate has, as a conversion value for a 3.85 mm-thickness glass plate, a visible light transmittance Tv_A of 70% or more, a total solar transmittance Tts of 63.7% or less, and c* in the L*a*b* color space of 4 or less.

公开(公告)号：US20230034469A1

公开(公告)日：2023-02-02

申请号：US17936146

申请日：2022-09-28

Applicant: AGC Inc.

Inventor： Takato KAJIHARA ,  Hiroyuki HIJIYA ,  Tomonori OGAWA ,  Kosho AKATSUKA

IPC: C03C10/00 ,  C03C4/16 ,  C03B32/02

Abstract: The present invention relates to a crystallized glass including a crystalline phase consisting of Ba—Si—O, in which the crystallized glass includes Li, and crystallinity of Li-based crystals contained in the crystalline phase is 20% or lower as represented by weight %, a high-frequency substrate including the crystallized glass, and a manufacturing method for a crystallized glass including a crystalline phase consisting of Ba—Si—O, the method including: obtaining an amorphous glass by melt-shaping a material containing BaO and SiO2; and crystallizing the amorphous glass by holding the amorphous glass at a treatment temperature of 600° C. or higher and lower than 1,000° C.

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

IPC: C03C11/00 ,  C03B19/06 ,  C03B32/00 ,  C03C15/00 ,  C03C23/00

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.

公开(公告)号：US20240391826A1

公开(公告)日：2024-11-28

申请号：US18792612

申请日：2024-08-02

Applicant: AGC Inc.

Inventor： Hiroyuki HIJIYA ,  Takato KAJIHARA ,  Eriko MAEDA ,  Shusaku AKIBA ,  Chieko SUZUKI ,  Kenji IMAKITA

IPC: C03C21/00 ,  C03C3/087

Abstract: A chemically strengthened glass in which a base glass composition of the chemically strengthened glass includes, in terms of molar percentage based on oxides: 55% to 75% of SiO2; 8% to 20% of Al2O3; 3% to 15% of Li2O; 1% to 5% of Na2O; 0% to 3% of K2O; 0% to 10% of MgO; 0% to 3% of Y2O3; 0% to 3% of ZrO2; 0% to 10% of CaO; 0% to 5% of SrO; 0% to 5% of ZnO; 0% to 3% of TiO2; 0% to 1% of SnO2; 0% to 5% of P2O5; and 0% to 10% of B2O3, a ratio [ZrO2]/([Y2O3]+[ZrO2]) is 0 or more and 0.7 or less, and the total content of Y2O3 and ZrO2 is 0.0% or more and 3.0% or less, and a value of 1nW represented by the Formula (1) is 10 or more and 20 or less.

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

IPC: C03C3/091 ,  C03C4/16

CPC classification number: C03C3/091 ,  C03C4/16

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.

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.