Glass composition, chemically strengthened glass, and glass substrate for information recording medium

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United States of America Patent

PATENT NO 9688573
SERIAL NO

14898334

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The present invention provides a glass composition containing, in mass %: 59.0 to 63.0% SiO2; 4.0 to 10.0% TiO2; 8.0 to 12.0% Al2O3; 1.0 to 5.0% MgO; 0 to 4.0% CaO; 4.0 to 14.0% SrO; 4.0 to 11.0% Na2O; and 0 to 1.0% K2O. According to the present invention, it is possible to provide a glass composition having excellent heat resistance, being suitable for production by the float process, and being suitable for chemical strengthening.

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Patent Owner(s)

  • NIPPON SHEET GLASS COMPANY, LIMITED

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kurachi, Junji Hyogo, JP 45 685
Senshu, Yutaka Hyogo, JP 9 44

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