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Sadao Nunotani
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Oyama, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Hydraulically driven type working machine
Patent number
6,578,296
Issue date
Jun 17, 2003
Komatsu Ltd.
Kenzo Kimoto
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Positioning device, capacity controller using positioning device, a...
Patent number
6,481,333
Issue date
Nov 19, 2002
Komatsu Ltd.
Toshiyuki Akasaka
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Piston pump motor
Patent number
6,324,959
Issue date
Dec 4, 2001
Komatsu Ltd.
Toshiyuki Akasaka
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Travel drive apparatus for hydraulic drive work vehicles and contro...
Patent number
6,226,987
Issue date
May 8, 2001
Komatsu Ltd.
Seita Hayashi
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Travel drive apparatus for hydraulic drive work vehicle and control...
Patent number
6,209,675
Issue date
Apr 3, 2001
Komatsu Ltd.
Seita Hayashi
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Backpressure control circuit for hydraulic drive device
Patent number
6,112,521
Issue date
Sep 5, 2000
Komatsu Ltd.
Seita Hayashi
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Counter balance valve
Patent number
6,068,013
Issue date
May 30, 2000
Komatsu Ltd.
Mitsuru Arai
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Hydraulic circuit for hydraulically driven working vehicle
Patent number
5,946,910
Issue date
Sep 7, 1999
Komatsu Ltd.
Seita Hayashi
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Driving device for a hydraulic motor
Patent number
5,930,997
Issue date
Aug 3, 1999
Komatsu Ltd.
Seita Hayashi
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Capacity control device for a hydraulic motor for a hydraulically d...
Patent number
5,907,952
Issue date
Jun 1, 1999
Komatsu Ltd.
Tosiyuki Akasaka
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Hydraulic braking apparatus having two safety valves
Patent number
5,884,984
Issue date
Mar 23, 1999
Komatsu Ltd.
Mitsuru Arai
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Swash plate angle changing apparatus for a piston pump/motor of swa...
Patent number
5,826,488
Issue date
Oct 27, 1998
Komatsu Ltd.
Mitsuru Arai
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Patents Applications
last 30 patents
Information
Patent Application
Hydraulically driven type working machine
Publication number
20020062587
Publication date
May 30, 2002
Komatsu Ltd.
Kenzo Kimoto
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING