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Yoshiaki Abe

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Patents Grantslast 30 patents

  • Information Patent Grant

    Method and apparatus for controlling a magnetic bearing
    • Patent number 5,486,729
    • Issue date Jan 23, 1996
    • Hitachi, Ltd.
    • Osami Matsushita
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Centrifugal compressor
    • Patent number 5,178,516
    • Issue date Jan 12, 1993
    • Hitachi, Ltd.
    • Koji Nakagawa
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Diffuser for a centrifugal compressor
    • Patent number 4,969,798
    • Issue date Nov 13, 1990
    • Hitachi, Ltd.
    • Haruki Sakai
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Diffuser for centrifugal compressor
    • Patent number 4,877,370
    • Issue date Oct 31, 1989
    • Hitachi, Ltd.
    • Koji Nakagawa
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Method of capacity controlling of multistage compressor and apparat...
    • Patent number 4,770,602
    • Issue date Sep 13, 1988
    • Hitachi, Ltd.
    • Haruo Miura
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Vane angle changing device for an axial fluid machine
    • Patent number 4,618,311
    • Issue date Oct 21, 1986
    • Hitachi, Ltd.
    • Haruo Miura
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Rotor of axial-flow machine
    • Patent number 4,432,697
    • Issue date Feb 21, 1984
    • Hitachi, Ltd.
    • Haruo Miura
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES