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Hiroyuki Kudo
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Hitachi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Information processing system
Patent number
6,073,054
Issue date
Jun 6, 2000
Hitachi, Ltd.
Yasunori Katayama
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Electrical power distribution monitoring system and method
Patent number
6,061,609
Issue date
May 9, 2000
Hitachi, Ltd.
Minoru Kanoi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Electrical power distribution monitoring system and method
Patent number
5,963,457
Issue date
Oct 5, 1999
Hitachi, Ltd.
Minoru Kanoi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Power distribution control system
Patent number
5,812,389
Issue date
Sep 22, 1998
Hitachi, Ltd.
Yasunori Katayama
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Expert system development support system and expert system environm...
Patent number
5,506,938
Issue date
Apr 9, 1996
Hitachi, Ltd.
Chihiro Fukui
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Expert system development support system and expert system environm...
Patent number
5,359,701
Issue date
Oct 25, 1994
Hitachi, Ltd.
Chihiro Fukui
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Digital signal processing method and system, electric power system...
Patent number
5,255,202
Issue date
Oct 19, 1993
Hitachi, Ltd.
Mitsuyasu Kido
G01 - MEASURING TESTING
Information
Patent Grant
Expert system development support system and expert system environm...
Patent number
5,228,117
Issue date
Jul 13, 1993
Hitachi, Ltd.
Chihiro Fukui
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Transformer protection system
Patent number
4,772,978
Issue date
Sep 20, 1988
Hitachi, Ltd.
Yoshifumi Oura
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Protective relay
Patent number
4,562,507
Issue date
Dec 31, 1985
Hitachi, Ltd.
Hiroyuki Kudo
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Patents Applications
last 30 patents
Information
Patent Application
Energy and power interchange system and its method
Publication number
20040199478
Publication date
Oct 7, 2004
Hitachi, Ltd.
Hiroshi Arita
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Energy and power interchange system and its method
Publication number
20020128749
Publication date
Sep 12, 2002
Hitachi, Ltd.
Hiroshi Arita
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
ENERGY AND POWER INTERCHANGE SYSTEM AND ITS METHOD
Publication number
20020060497
Publication date
May 23, 2002
HIROSHI ARITA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Energy and power interchange system and its method
Publication number
20010005802
Publication date
Jun 28, 2001
Hiroshi Arita
G06 - COMPUTING CALCULATING COUNTING