TEMPERED GLASS PLATE
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United States of America Patent
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Issued Date -
Nov 28, 2013
app pub date -
Feb 7, 2012
filing date -
Feb 10, 2011
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
Provided is a tempered glass sheet having a compression stress layer in a surface thereof, comprising, as a glass composition expressed in mass % in terms of oxides, 50 to 70% of SiO2, 5 to 20% of Al2O3, 0 to 5% of B2O3, 8 to 18% of Na2O, 2 to 9% of K2O, and 30 to 1,500 ppm of Fe2O3, and having a spectral transmittance in terms of a thickness of 1.0 mm at a wavelength of 400 to 700 nm of 85% or more, a chromaticity x of 0.3095 to 0.3120 in xy chromaticity coordinates (illuminant C, in terms of a thickness of 1 mm), and a chromaticity y of 0.3160 to 0.3180 in xy chromaticity coordinates (illuminant C, in terms of a thickness of 1 mm).
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