Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Yasutomi Iwahashi0
Akio Koike0
Date of Patent
August 12, 2008
Patent Application Number
11172872
Date Filed
July 5, 2005
Patent Primary Examiner
Patent abstract
A silica glass containing TiO2, which has a fictive temperature of at most 1,200° C., an OH group concentration of at most 600 ppm and a coefficient of thermal expansion of 0±200 ppb/° C. from 0 to 100° C.
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