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Tadao Kushima
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Ibaraki, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Circuit board
Patent number
7,141,741
Issue date
Nov 28, 2006
Hitachi, Ltd.
Kazuji Yamada
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Semiconductor module and inverter device
Patent number
6,441,317
Issue date
Aug 27, 2002
Hitachi, Ltd.
Akira Tanaka
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Semiconductor device
Patent number
6,434,008
Issue date
Aug 13, 2002
Hitachi, Ltd.
Kazuji Yamada
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Semiconductor device having power semiconductor elements
Patent number
5,956,231
Issue date
Sep 21, 1999
Hitachi, Ltd.
Kazuji Yamada
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Solder carrier, manufacturing method thereof and method of mounting...
Patent number
4,906,823
Issue date
Mar 6, 1990
Hitachi, Ltd.
Tadao Kushima
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Semiconductor resin package structure
Patent number
4,825,284
Issue date
Apr 25, 1989
Hitachi, Ltd.
Tasao Soga
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method of manufacturing solar battery
Patent number
4,562,637
Issue date
Jan 7, 1986
Hitachi, Ltd.
Tadao Kushima
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method of forming a number of solder layers on a semiconductor wafer
Patent number
4,503,597
Issue date
Mar 12, 1985
Hitachi, Ltd.
Tadao Kushima
H01 - BASIC ELECTRIC ELEMENTS
Patents Applications
last 30 patents
Information
Patent Application
Circuit board
Publication number
20040056349
Publication date
Mar 25, 2004
Kazuji Yamada
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Semiconductor device
Publication number
20030016502
Publication date
Jan 23, 2003
Kazuji Yamada
H01 - BASIC ELECTRIC ELEMENTS