	US 12,448,321 B2
	Glass plate and window
Eriko Maeda, Chiyoda-ku (JP); Takato Kajihara, Chiyoda-ku (JP); Kensuke Nagai, Chiyoda-ku (JP); Yutaka Kuroiwa, Chiyoda-ku (JP); Osamu Kagaya, Chiyoda-ku (JP); Ryuta Sonoda, Chiyoda-ku (JP); and Hiroyuki Hijiya, Chiyoda-ku (JP)
Assigned to AGC Inc., Tokyo (JP)
Filed by AGC Inc., Tokyo (JP)
Filed on Mar. 13, 2023, as Appl. No. 18/182,759.
Application 18/182,759 is a division of application No. 16/590,573, filed on Oct. 2, 2019, granted, now 11,634,353.
Application 16/590,573 is a continuation of application No. PCT/JP2018/017236, filed on Apr. 27, 2018.
Claims priority of application No. 2017-090141 (JP), filed on Apr. 28, 2017; and application No. 2017-140687 (JP), filed on Jul. 20, 2017.
Prior Publication US 2023/0212059 A1, Jul. 6, 2023
Int. Cl. C03C 3/091 (2006.01); C03C 3/083 (2006.01); C03C 3/085 (2006.01); C03C 3/087 (2006.01); C03C 3/093 (2006.01); C03C 3/095 (2006.01); H01Q 1/12 (2006.01); B60J 1/00 (2006.01); C03C 3/105 (2006.01); C03C 3/108 (2006.01)

CPC C03C 3/091 (2013.01) [C03C 3/083 (2013.01); C03C 3/085 (2013.01); C03C 3/087 (2013.01); C03C 3/093 (2013.01); C03C 3/095 (2013.01); H01Q 1/1271 (2013.01); B60J 1/00 (2013.01); C03C 3/105 (2013.01); C03C 3/108 (2013.01)]

19 Claims

1. A glass plate, comprising:

a glass having a composition including 55≤SiO₂≤73.56, 1.44≤Al₂O₃≤9, 6.0≤B₂O₃≤13, 0≤MgO≤15, 0≤CaO≤20, 0≤SrO≤15, 0≤BaO≤1, 0.01≤Li₂O≤19.1, 0≤Na₂O≤16,

0.9≤K₂O≤16, 0≤ZrO₂≤2, 0.001≤Fe₂O₃≤5, 0.001≤TiO₂≤5, 0≤PbO<0.001, and 0≤ZnO≤3 such that the 0.91≤R₂O≤20, 0≤RO≤20, 56.44≤SiO₂+Al₂O₃≤75, 85≤SiO₂+Al₂O₃+MgO+CaO+SrO+BaO+Li₂O+Na₂O+K₂O+Fe₂O₃+TiO₂≤100, 10<7Al₂O₃+3MgO-4Li₂O≤66, and 0≤Na₂O/R₂O≤0.8, by mol % based on oxides, where R₂O is a total content of alkali metal oxides, and RO is a total content of MgO, CaO, SrO, and BaO,

wherein the glass plate has a radio transmittance of at least 20% at a frequency of 100 GHz as calculated as 18 mm thickness.