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

IPC: C03C3/087 ,  B32B17/10 ,  C03C3/091

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.

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.