US Patent 7473317 Crystal growth crucible
Patent 7473317 was granted and assigned to Sumitomo Electric Industries on January, 2009 by the United States Patent and Trademark Office.
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Patent abstract
A crystal growth crucible made of boron nitride includes a cylindrical tip portion for accommodating a seed crystal, and a cylindrical straight-body portion for growing a crystal, which is formed above the tip portion and has a diameter larger than that of the tip portion. Thickness T1 of the tip portion and thickness T2 of the straight-body portion satisfy a condition of 0.1 mm≦T2<T1≦5 mm, and inside diameter D2 and length L2 of the straight-body portion satisfy conditions of 100 mm<D2 and 2<L2/D2<5.
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US Patent 07473317 Crystal growth crucible US Patent 7473317 Crystal growth crucible
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Patent Number
0747331700
Patent Number
747331700
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Infobox
Is a
Current Assignee
Patent Jurisdiction
Patent Number
074733170
Date of Patent
January 6, 2009
0Patent Application Number
118848360
Date Filed
March 9, 2006
0Official Website
Patent Primary Examiner
Edits on 25 Sep, 2022
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Infobox
Is a
Current Assignee
Patent Jurisdiction
Patent Number
074733170
Date of Patent
January 6, 2009
0Patent Application Number
118848360
Date Filed
March 9, 2006
0Official Website
Patent Primary Examiner
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US Patent 07473317 Crystal growth crucible
Infobox
Is a
Current assignee
Patent jurisdiction
Patent number
07473317
Date of patent
January 6, 2009
Patent application number
11884836
Date Filed
March 9, 2006
Patent primary examiner
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