Alkali-free glass

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United States of America Patent

PATENT NO 8835335
APP PUB NO 20110318561A1
SERIAL NO

13255343

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Abstract

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An alkali-free glass of the present invention comprises, as a glass composition expressed in terms of oxides by mass %, 45 to 70% of SiO2, 10 to 30% of Al2O3, 11 to 20% of B2O3, less than 0.1% of As2O3, less than 0.1% of Sb2O3, and less than 0.1% of an alkali metal oxide, and has a thermal expansion coefficient (30 to 380° C.) of 30 to 35×10−7/° C.

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Patent Owner(s)

  • NIPPON ELECTRIC GLASS CO., LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Miwa, Shinkichi Otsu, JP 20 355
Murata, Takashi Otsu, JP 156 2620

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