Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
November 28, 2006
Patent Application Number
10169191
Date Filed
December 28, 2000
Patent Primary Examiner
Patent abstract
A hydrous silica gel is dehydrated by freezing, thawing, and removing water separated by thawing, thereby yielding silica particles. In addition, the silica particles thus formed is washed and fired, thereby producing a synthetic quartz glass power.
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