Tempered glass and tempered glass sheet

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United States of America Patent

PATENT NO 8835007
APP PUB NO 20130017380A1
SERIAL NO

13569633

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A tempered glass has a compression stress layer in a surface thereof, and includes as a glass composition in terms of mol %, 50 to 75% of SiO2, 3 to 13% of Al2O3, 0 to 1.5% of B2O3, 0 to 4% of Li2O, 7 to 20 % of Na2O, 0 to 10 % of K2O, 0.5 to 13% of MgO, 0 to 6% of CaO, and 0 to 4.5% of SrO. The tempered glass is substantially free of As2O3, Sb2O3, PbO, and F. The tempered glass has a molar ratio MgO/(MgO+Al2O3) of 0.05 to 0.30.

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Patent Owner(s)

  • NIPPON ELECTRIC GLASS CO., LTD.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kawamoto, Kosuke Shiga, JP 26 393
Murata, Takashi Shiga, JP 156 2641
Tojyo, Takako Shiga, JP 12 472
Tomita, Yuusuke Shiga, JP 11 221

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