Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Kenji Okita0
Date of Patent
December 4, 2007
Patent Application Number
11136723
Date Filed
May 25, 2005
Patent Primary Examiner
Patent abstract
An apparatus for pulling single crystal comprises a quartz crucible provided in a chamber for storing raw melt of a single crystal, a heater that heats the raw melt of the single crystal, and a crucible driving unit that rotates the quartz crucible. A quartz crucible deformation prevention unit using an arm or gas blowout is provided in the chamber, whereby deformation of a wall part of the quartz crucible during manufacture thereof can be prevented, and a deformed quartz crucible can be repaired.
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