US Patent 7303629 Apparatus for pulling single crystal
Patent 7303629 was granted and assigned to SUMCO on December, 2007 by the United States Patent and Trademark Office.
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Patent Inventor Names
Kenji Okita0
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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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US Patent 07303629 Apparatus for pulling single crystal US Patent 7303629 Apparatus for pulling single crystal
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Patent Number
07303629
Patent Number
7303629
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US Patent 07303629 Apparatus for pulling single crystal
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Is a
Current assignee
Patent jurisdiction
Patent number
07303629
Date of patent
December 4, 2007
Patent application number
11136723
Date Filed
May 25, 2005
Patent primary examiner
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