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Ibaraki-ken, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Fluidal machine
Patent number
6,749,397
Issue date
Jun 15, 2004
Hitachi, Ltd.
Yoshiharu Ueyama
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Fluidal machine
Patent number
6,568,904
Issue date
May 27, 2003
Hitachi, Ltd.
Yoshiharu Ueyama
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Vacuum cleaner
Patent number
6,442,792
Issue date
Sep 3, 2002
Hitachi, Ltd.
Takayuki Sudou
A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
Information
Patent Grant
Centrifugal fluid machine
Patent number
6,371,724
Issue date
Apr 16, 2002
Hitachi, Ltd.
Yoshihiro Nagaoka
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Centrifugal fluid machine
Patent number
6,364,607
Issue date
Apr 2, 2002
Hitachi, Ltd.
Yoshihiro Nagaoka
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Centrifugal fluid machine
Patent number
6,312,222
Issue date
Nov 6, 2001
Hitachi, Ltd.
Yoshihiro Nagaoka
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Centrifugal fluid machine
Patent number
6,290,460
Issue date
Sep 18, 2001
Hitachi, Ltd.
Yoshihiro Nagaoka
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Centrifugal type fluid machine
Patent number
6,162,015
Issue date
Dec 19, 2000
Hitachi, Ltd.
Yuuji Nagai
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Centrifugal fluid machine
Patent number
6,139,266
Issue date
Oct 31, 2000
Hitachi, Ltd.
Yoshihiro Nagaoka
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Drainage water pumping station and method for operating the same
Patent number
6,132,136
Issue date
Oct 17, 2000
Hitachi, Ltd.
Kunio Takada
E03 - WATER SUPPLY SEWERAGE
Information
Patent Grant
Large-depth underground drainage facility and method of running same
Patent number
6,102,618
Issue date
Aug 15, 2000
Hitachi, Ltd.
Kunio Takada
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Centrifugal fluid machine
Patent number
5,971,705
Issue date
Oct 26, 1999
Hitachi, Ltd.
Yoshihiro Nagaoka
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Large-depth underground drainage facility and method of running same
Patent number
5,909,982
Issue date
Jun 8, 1999
Hitachi, Ltd.
Kunio Takada
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Centrifugal fluid machine
Patent number
5,857,834
Issue date
Jan 12, 1999
Hitachi, Ltd.
Yoshihiro Nagaoka
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Drainage pump station and drainage operation method for drainage pu...
Patent number
5,752,785
Issue date
May 19, 1998
Hitachi, Ltd.
Sadashi Tanaka
E03 - WATER SUPPLY SEWERAGE
Information
Patent Grant
Drainage water pumping station and method for operating the same
Patent number
5,733,064
Issue date
Mar 31, 1998
Hitachi, Ltd.
Kunio Takada
E03 - WATER SUPPLY SEWERAGE
Information
Patent Grant
Centrifugal compressor and vaned diffuser
Patent number
5,709,531
Issue date
Jan 20, 1998
Hitachi, Ltd.
Hideo Nishida
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Large-depth underground drainage facility and method of running same
Patent number
5,634,740
Issue date
Jun 3, 1997
Hitachi, Ltd.
Kunio Takada
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Drainage water pumping station and method for operating the same
Patent number
5,603,587
Issue date
Feb 18, 1997
Hitachi, Ltd.
Kunio Takada
E03 - WATER SUPPLY SEWERAGE
Information
Patent Grant
Centrifugal fluid machine
Patent number
5,595,473
Issue date
Jan 21, 1997
Hitachi, Ltd.
Yoshihiro Nagaoka
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Centrifugal compressor and vaned diffuser
Patent number
5,516,263
Issue date
May 14, 1996
Hitachi, Ltd.
Hideo Nishida
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Drainage water pumping station and method for operating the same
Patent number
5,498,105
Issue date
Mar 12, 1996
Hitachi, Ltd.
Kunio Takada
E03 - WATER SUPPLY SEWERAGE
Information
Patent Grant
Large-depth underground drainage facility and method of running same
Patent number
5,487,621
Issue date
Jan 30, 1996
Hitachi, Ltd.
Kunio Takada
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Drainage water pumping station and method for operating the same
Patent number
5,360,289
Issue date
Nov 1, 1994
Hitachi, Ltd.
Kunio Takada
E03 - WATER SUPPLY SEWERAGE
Patents Applications
last 30 patents
Information
Patent Application
Fluidal machine
Publication number
20030108419
Publication date
Jun 12, 2003
Hitachi, Ltd.
Yoshiharu Ueyama
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Application
Centrifugal fluid machine
Publication number
20010036404
Publication date
Nov 1, 2001
Yoshihiro Nagaoka
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Application
Centrifugal fluid machine
Publication number
20010033792
Publication date
Oct 25, 2001
Yoshihiro Nagaoka
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...