TEMPERED GLASS, AND TEMPERED GLASS PLATE
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United States of America Patent
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Issued Date -
Nov 7, 2013
app pub date -
Jan 16, 2012
filing date -
Jan 18, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Provided is a tempered glass having a compression stress layer in a surface thereof, comprising, as a glass composition in terms of mass %, 50 to 75% of SiO2, 5 to 20% of Al2O3, 0 to 8% of B2O3, 5 to 20% of Na2O, 0.1 to 10% of K2O, 0.1 to 15% of MgO, and 0.001 to 5% of SrO+BaO, and having a mass ratio (MgO+CaO+SrO+BaO)/(MgO+ZrO2) of 0.3 to 1.5.
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