Strengthened glass, strengthened glass plate, strengthened glass container, and glass for strengthening

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United States of America Patent

PATENT NO 9919949
SERIAL NO

14651368

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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To devise a tempered glass and a glass to be tempered each of which is lowered in density and viscosity at high temperature, hardly deteriorates a KNO3 molten salt, and is excellent in thermal shock resistance. The tempered glass having a compression stress layer in a surface thereof, including as a glass composition, in terms of mol %, 50 to 80% of SiO2, 5 to 30% of Al2O3, 0 to 2% of Li2O, 5 to 25% of Na2O, and 0 to 5% of K2O, and being substantially free of As2O3, Sb2O3, PbO, and F.

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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
Choju, Ken Shiga, JP 9 79
Kawamoto, Kosuke Shiga, JP 26 393

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