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Patents Grants
last 30 patents
Information
Patent Grant
Steam turbine blade, and steam turbine and steam turbine power plan...
Patent number
6,575,700
Issue date
Jun 10, 2003
Hitachi, Ltd.
Masahiko Arai
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Steam turbine
Patent number
6,568,908
Issue date
May 27, 2003
Hitachi, Ltd.
Kiyoshi Namura
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Grant
Method of making steam turbine blade
Patent number
6,493,936
Issue date
Dec 17, 2002
Hitachi, Ltd.
Hiroyuki Doi
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Steam turbine blade, and steam turbine and steam turbine power plan...
Patent number
6,398,504
Issue date
Jun 4, 2002
Hitachi, Ltd.
Masahiko Arai
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Steam turbine power-generation plant and steam turbine
Patent number
6,358,004
Issue date
Mar 19, 2002
Hitachi, Ltd.
Masao Shiga
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Steam turbine
Patent number
6,341,941
Issue date
Jan 29, 2002
Hitachi, Ltd.
Kiyoshi Namura
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Grant
Method of making a turbine blade
Patent number
6,305,078
Issue date
Oct 23, 2001
Hitachi, Ltd.
Masao Shiga
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Steam turbine, rotor shaft thereof, and heat resisting steel
Patent number
6,224,334
Issue date
May 1, 2001
Hitachi, Ltd.
Masao Siga
C21 - METALLURGY OF IRON
Information
Patent Grant
Steam turbine blade, method of manufacturing the same, steam turbin...
Patent number
6,206,634
Issue date
Mar 27, 2001
Hitachi, Ltd.
Hiroyuki Doi
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
High and low pressure sides-integrating system turbine, long blades...
Patent number
6,182,439
Issue date
Feb 6, 2001
Hitachi, Ltd.
Masao Siga
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Steam-turbine power plant and steam turbine
Patent number
6,174,132
Issue date
Jan 16, 2001
Hitachi, Ltd.
Masao Shiga
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Steam turbine power-generation plant and steam turbine
Patent number
6,129,514
Issue date
Oct 10, 2000
Hitachi, Ltd.
Masao Shiga
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Steam-turbine power plant and steam turbine
Patent number
6,123,504
Issue date
Sep 26, 2000
Hitachi, Ltd.
Masao Shiga
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
High and low pressure sides-integrating steam turbine, long blades...
Patent number
6,074,169
Issue date
Jun 13, 2000
Hitachi, Ltd.
Masao Siga
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Steam-turbine power plant and steam turbine
Patent number
5,749,228
Issue date
May 12, 1998
Hitachi, Ltd.
Masao Shiga
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Steam turbine, rotor shaft thereof, and heat resisting steel
Patent number
5,624,235
Issue date
Apr 29, 1997
Hitachi, Ltd.
Masao Siga
C21 - METALLURGY OF IRON
Information
Patent Grant
Steam turbine rotor shaft thereof and heat resisting steel
Patent number
5,569,338
Issue date
Oct 29, 1996
Hitachi, Ltd.
Masao Siga
C21 - METALLURGY OF IRON
Information
Patent Grant
Combined generator system
Patent number
5,536,146
Issue date
Jul 16, 1996
Hitachi, Ltd.
Masao Siga
C21 - METALLURGY OF IRON
Information
Patent Grant
Steam turbine, rotor shaft thereof, and heat resisting steel
Patent number
5,383,768
Issue date
Jan 24, 1995
Hitachi, Ltd.
Masao Siga
C21 - METALLURGY OF IRON
Patents Applications
last 30 patents
Information
Patent Application
Steam turbine blade, and steam turbine and steam turbine power plan...
Publication number
20020197163
Publication date
Dec 26, 2002
Masahiko Arai
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
Steam turbine
Publication number
20020057969
Publication date
May 16, 2002
Kiyoshi Namura
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Application
Steam turbine blade, method of manufacturing the same, steam turbin...
Publication number
20010021346
Publication date
Sep 13, 2001
Hitachi, Ltd.
Hiroyuki Doi
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...