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US 2009/0143213 A1Published application
Low expansion glass material having low expansivity gradient
AssigneeCorning Incorporated
InventorsKenneth Edward Hrdina, Robert Sabia
Life of this patent
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Abstract
A low expansion glass substrate includes titania and silica and has a thermal expansivity with an average gradient less than 1 ppb/° C./° C. in a temperature range of 19° C. to 25° C.
Claims10
A low expansion glass substrate comprising titania and silica, the low expansion glass substrate having a thermal expansivity with an average gradient less than 1 ppb/° C./° C. at the use temperature.
Dependencies are inferred from the claim text.