Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
January 31, 2012
Patent Application Number
12688501
Date Filed
January 15, 2010
Patent Citations Received
Patent Primary Examiner
Patent abstract
In a mold for use in the production of a silica crucible, a mold cover corresponding to a small-diameter thinned portion of an upper part of the silica crucible is detachably disposed on a mold substrate corresponding to a main body of the silica crucible, and the mold cover has a barrier function against arc heating, and an inner diameter of the mold cover is smaller than that of the mold substrate but larger than that of the silica crucible.
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