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Hitachi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Permanent magnet synchronous machine, and pressing or extrusion mac...
Patent number
8,729,762
Issue date
May 20, 2014
Hitachi, Ltd.
Akeshi Takahashi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Permanent magnet type electric rotary machine and compressor using...
Patent number
7,915,776
Issue date
Mar 29, 2011
Hitachi Industrial Equipment Systems Co., Ltd.
Ryoichi Takahata
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Permanent magnet type electric rotary machine and compressor using...
Patent number
7,768,172
Issue date
Aug 3, 2010
Hitachi Industrial Equipment Systems Co., Ltd.
Ryoichi Takahata
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Permanent magnet type rotating electric machine
Patent number
6,838,798
Issue date
Jan 4, 2005
Hitachi, Ltd.
Ryoichi Takahata
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Permanent magnet type electric rotating machine
Patent number
6,759,776
Issue date
Jul 6, 2004
Hitachi, Ltd.
Ryoichi Takahata
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Permanent magnet type electric rotating machine
Patent number
6,759,777
Issue date
Jul 6, 2004
Hitachi, Ltd.
Ryoichi Takahata
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Permanent magnet type rotating electric machine
Patent number
6,552,461
Issue date
Apr 22, 2003
Hitachi, Ltd.
Ryoichi Takahata
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Permanent-magnet-type electric rotating machine and air compressor...
Patent number
6,369,478
Issue date
Apr 9, 2002
Hitachi, Ltd.
Haruo Koharagi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Armature winding and rotating electric machine using the same
Patent number
6,359,361
Issue date
Mar 19, 2002
Hitachi, Ltd.
Shinichi Wakui
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Turbine generator
Patent number
5,469,009
Issue date
Nov 21, 1995
Hitachi, Ltd.
Shinichi Wakui
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Patents Applications
last 30 patents
Information
Patent Application
PERMANENT MAGNET SYNCHRONOUS MACHINE, AND PRESSING OR EXTRUSION MAC...
Publication number
20110241466
Publication date
Oct 6, 2011
Hitachi, Ltd.
Akeshi TAKAHASHI
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
Permanent Magnet Type Electric Rotary Machine And Compressor Using...
Publication number
20100244609
Publication date
Sep 30, 2010
Ryoichi TAKAHATA
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
PERMANENT MAGNET TYPE ELECTRIC ROTARY MACHINE AND COMPRESSOR USING...
Publication number
20080018190
Publication date
Jan 24, 2008
Ryoichi TAKAHATA
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
DISPLACEMENT TYPE COMPRESSOR
Publication number
20070231171
Publication date
Oct 4, 2007
Takeshi Tsuchiya
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Application
Permanent magnet type rotating electric machine
Publication number
20030107291
Publication date
Jun 12, 2003
Hitachi, Ltd
Ryoichi Takahata
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
Permanent magnet type electric rotating machine
Publication number
20030067236
Publication date
Apr 10, 2003
Hitachi, Ltd.
Ryoichi Takahata
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Application
Permanent magnet type electric rotating machine
Publication number
20030067237
Publication date
Apr 10, 2003
Ryoichi Takahata
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Application
Permanent magnet type rotating electrical machine and air condition...
Publication number
20020175583
Publication date
Nov 28, 2002
Satoshi Kikuchi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
Permanent magnet type rotating electrical machine
Publication number
20020175584
Publication date
Nov 28, 2002
Haruo Koharagi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
Rotor and rotating electrical machine with embedded permanent magnet
Publication number
20020171309
Publication date
Nov 21, 2002
Shinichi Wakui
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
Permanent magnet type rotating electric machine
Publication number
20020130574
Publication date
Sep 19, 2002
Ryoichi Takahata
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER