Glass manufacturing – Processes – Sequentially forming – reheating – and working
Reexamination Certificate
2007-01-02
2007-01-02
Lorengo, J. A. (Department: 1755)
Glass manufacturing
Processes
Sequentially forming, reheating, and working
C065S063000, C065S102000
Reexamination Certificate
active
10638004
ABSTRACT:
The present invention provides doped titania-doped silica glass articles having low thermal expansions and low variations in thermal expansion. According to one embodiment of the invention, a titania-doped silica glass article has a titania content of between about 5 wt % and about 9 wt %; a coefficient of thermal expansion of between about −30 ppb/° C. and about +30 ppb/° C. at a temperature between 15° C. and 30° C.; and a variation in coefficient of thermal expansion of less than about 5 ppb/° C. at a temperature between 15° C. and 30° C.
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Dawes Steven B.
Fiacco Richard M.
Hrdina Kenneth E.
Wasilewski Michael H.
Bolden Elizabeth A.
Corning Incorporated
Douglas Walter M.
Lorengo J. A.
Suggs James V.
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