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Ichiro Hitomi
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Katsuta, JP
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last 30 patents
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Patent Grant
Lubricated bearing apparatus for hydraulic machinery
Patent number
4,892,419
Issue date
Jan 9, 1990
Hitachi, Ltd.
Hisao Inoue
F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
Information
Patent Grant
End face mechanical shaft seal for use in hydraulic machines and se...
Patent number
4,746,268
Issue date
May 24, 1988
Hitachi, Ltd.
Osamu Sugimoto
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Variable speed pumping-up electrical power system
Patent number
4,743,827
Issue date
May 10, 1988
Hitachi, Ltd.
Junichi Shiozaki
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER