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Yasuhiro Oura
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Tokyo, JP
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last 30 patents
Information
Patent Grant
Silicon wafer for IGBT and method for producing same
Patent number
7,846,252
Issue date
Dec 7, 2010
Sumco Corporation
Shigeru Umeno
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Grant
Method for manufacturing SOI wafer
Patent number
7,615,467
Issue date
Nov 10, 2009
Sumco Corporation
Takaaki Shiota
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method for manufacturing SOI wafer
Patent number
7,582,540
Issue date
Sep 1, 2009
Sumco Corporation
Takaaki Shiota
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Silicon wafer for IGBT and method for producing same
Patent number
7,344,689
Issue date
Mar 18, 2008
Sumco Corporation
Shigeru Umeno
H01 - BASIC ELECTRIC ELEMENTS
Patents Applications
last 30 patents
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Patent Application
SILICON WAFER FOR IGBT AND METHOD FOR PRODUCING SAME
Publication number
20080102287
Publication date
May 1, 2008
SUMCO CORPORATION
Shigeru Umeno
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Silicon wafer for IGBT and method for producing same
Publication number
20070000427
Publication date
Jan 4, 2007
Shigeru Umeno
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Method for manufacturing SOI wafer
Publication number
20060121696
Publication date
Jun 8, 2006
SUMCO CORPORATION
Takaaki Shiota
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Method for manufacturing SOI wafer
Publication number
20060121692
Publication date
Jun 8, 2006
SUMCO CORPORATION
Takaaki Shiota
H01 - BASIC ELECTRIC ELEMENTS