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Keiichi Yoshida

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  • Sakai, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Vacuum pump
    • Patent number 5,221,179
    • Issue date Jun 22, 1993
    • Osaka Vacuum, Ltd.
    • Tatsuji Ikegami
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Vacuum pump
    • Patent number 5,219,269
    • Issue date Jun 15, 1993
    • Osaka Vacuum, Ltd.
    • Tatsuji Ikegami
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Vacuum pump
    • Patent number 5,217,346
    • Issue date Jun 8, 1993
    • Osaka Vacuum, Ltd.
    • Tatsuji Ikegami
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Vacuum pump with a peripheral groove pump unit
    • Patent number 5,160,250
    • Issue date Nov 3, 1992
    • Osaka Vacuum, Ltd.
    • Tatsuji Ikegami
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Vacuum pump
    • Patent number 5,074,747
    • Issue date Dec 24, 1991
    • Osaka Vacuum, Ltd.
    • Tatsuji Ikegami
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...