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Hiroshi Yokota

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  • Hiroshima, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Self-priming centrifugal pump
    • Patent number 9,759,217
    • Issue date Sep 12, 2017
    • Kabushiki Kaisha Yokota Seisakusho
    • Hiroshi Yokota
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Gas-liquid dissolving tank and microscopic bubble generator
    • Patent number 9,700,853
    • Issue date Jul 11, 2017
    • Kabushiki Kaisha Yokota Seisakusho
    • Hiroshi Yokota
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Gas-liquid separator
    • Patent number 7,597,732
    • Issue date Oct 6, 2009
    • Kabushiki Kaisha Yokota Seisakusho
    • Hiroshi Yokota
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Pump apparatus
    • Patent number 6,629,821
    • Issue date Oct 7, 2003
    • Kabushiki Kaisha Yokota Seisakusho
    • Hiroshi Yokota
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Composite structure
    • Patent number 6,547,480
    • Issue date Apr 15, 2003
    • Kabushiki Kaisha Yokota Seisakusho
    • Hiroshi Yokota
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Automatic regulating valve apparatus
    • Patent number 6,263,905
    • Issue date Jul 24, 2001
    • Kabushiki Kaisha Yokota Seisakusho
    • Hiroshi Yokota
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    Self-priming type cetrifugal pump
    • Patent number 6,152,689
    • Issue date Nov 28, 2000
    • Kabushiki Kaisha Yokota Seisakusho
    • Hiroshi Yokota
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Control valve device
    • Patent number 6,135,142
    • Issue date Oct 24, 2000
    • Kabushiki Kaisha Yokota Seisakusho
    • Hiroshi Yokota
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Water-hammerless check valve
    • Patent number 6,102,072
    • Issue date Aug 15, 2000
    • Kabushiki Kaisha Yokota Seisakusho
    • Hiroshi Yokota
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Self-gush-cleaning filter device
    • Patent number 6,033,558
    • Issue date Mar 7, 2000
    • Kabushiki Kaisha Yokota Seisakusho
    • Hiroshi Yokota
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Composite-action butterfly valve
    • Patent number 5,957,428
    • Issue date Sep 28, 1999
    • Kabushiki Kaisha Yokota Seisakusho
    • Hiroshi Yokota
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Noncontaminative centrifugal pump
    • Patent number 5,779,445
    • Issue date Jul 14, 1998
    • Kabushiki Kaisha Yokota Seisakusho
    • Hiroshi Yokota
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Self-priming centrifugal pump
    • Patent number 5,772,394
    • Issue date Jun 30, 1998
    • Kabushiki Kaisha Yokota Seisakusho
    • Hiroshi Yokota
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Composite action type water-hammer-preventive check valve
    • Patent number 5,769,116
    • Issue date Jun 23, 1998
    • Kabushiki Kaisha Yokota Seisakusho
    • Hiroshi Yokota
    • E03 - WATER SUPPLY SEWERAGE
  • Information Patent Grant

    Water hammer preventing check valve
    • Patent number 5,746,246
    • Issue date May 5, 1998
    • Kabushiki Kaisha Yokota Seisakusho
    • Hiroshi Yokota
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Automatic constant-pressure regulating lift device
    • Patent number 5,735,308
    • Issue date Apr 7, 1998
    • Kabushiki Kaisha Yokota Seisakusho
    • Hiroshi Yokota
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    Composite-action butterfly valve
    • Patent number 5,713,556
    • Issue date Feb 3, 1998
    • Kabushiki Kaisha Yokota Seisakusho
    • Hiroshi Yokota
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Controllable constant flow regulating lift valve
    • Patent number 5,642,752
    • Issue date Jul 1, 1997
    • Kabushiki Kaisha Yokota Seisakusho
    • Hiroshi Yokota
    • G05 - CONTROLLING REGULATING

Patents Applicationslast 30 patents

  • Information Patent Application

    GAS-LIQUID DISSOLVING TANK AND MICROSCOPIC BUBBLE GENERATOR
    • Publication number 20150352505
    • Publication date Dec 10, 2015
    • KABUSHIKI KAISHA YOKOTA SEISAKUSHO
    • Hiroshi YOKOTA
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Application

    SELF-PRIMING CENTRIFUGAL PUMP
    • Publication number 20140169940
    • Publication date Jun 19, 2014
    • KABUSHIKI KAISHA YOKOTA SEISAKUSHO
    • Hiroshi Yokota
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Gas-liquid separator
    • Publication number 20060064954
    • Publication date Mar 30, 2006
    • Hiroshi Yokota
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL