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Wataru Itou
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Tokyo, JP
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last 30 patents
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Patent Grant
Silicon wafer and method for producing the same
Patent number
8,231,852
Issue date
Jul 31, 2012
Sumco Corporation
Wataru Itou
C30 - CRYSTAL GROWTH
Information
Patent Grant
Silicon wafer surface defect evaluation method
Patent number
7,632,349
Issue date
Dec 15, 2009
Sumco Corporation
Wataru Itou
H01 - BASIC ELECTRIC ELEMENTS
Patents Applications
last 30 patents
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Patent Application
SILICON WAFER AND METHOD FOR PRODUCING THE SAME
Publication number
20100290971
Publication date
Nov 18, 2010
Wataru Itou
C30 - CRYSTAL GROWTH
Information
Patent Application
METHOD OF PRODUCING SEMICONDUCTOR WAFER
Publication number
20100009521
Publication date
Jan 14, 2010
SUMCO CORPORATION
Takaaki Shiota
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Silicon Wafer Surface Defect Evaluation Method
Publication number
20070044709
Publication date
Mar 1, 2007
Wataru Itou
H01 - BASIC ELECTRIC ELEMENTS