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WATERWORKS TECHNOLOGY DEVELOPMENT ORGANIZATION CO., LTD.

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  • Osaka, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Disengagement prevention structure for pipe connecting portion
    • Patent number 12,031,649
    • Issue date Jul 9, 2024
    • Waterworks Technology Development Organization Co., Ltd.
    • Mitsuhiro Mori
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Housing device and method for mounting housing device
    • Patent number 11,892,111
    • Issue date Feb 6, 2024
    • Waterworks Technology Development Organization Co., Ltd.
    • Daisuke Kuwagaki
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Gate valve
    • Patent number 11,655,901
    • Issue date May 23, 2023
    • Waterworks Technology Development Organization Co., Ltd.
    • Hiroyuki Bekki
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Pipe joint and method of assembling pipe joint
    • Patent number 11,512,801
    • Issue date Nov 29, 2022
    • Waterworks Technology Development Organization Co., Ltd.
    • Daisuke Sakai
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Hermetically sealing device and hermetically sealing method
    • Patent number 11,421,811
    • Issue date Aug 23, 2022
    • Waterworks Technology Development Organization Co., Ltd.
    • Gou Horikawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Gate valve
    • Patent number 11,248,732
    • Issue date Feb 15, 2022
    • Waterworks Technology Development Organization Co., Ltd.
    • Gou Horikawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Valve device
    • Patent number 10,989,313
    • Issue date Apr 27, 2021
    • Waterworks Technology Development Organization Co., Ltd.
    • Yasuyuki Nagamori
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Corrosion prevention apparatus and corrosion prevention method for...
    • Patent number 10,612,688
    • Issue date Apr 7, 2020
    • Waterworks Technology Development Organization Co., Ltd.
    • Daisuke Kuwagaki
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Coated expandable-contractible flexible pipe
    • Patent number 10,161,555
    • Issue date Dec 25, 2018
    • Waterworks Technology Development Organization Co., Ltd.
    • Hiroyuki Bekki
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Extending/contracting flexible pipe and method for assembling exten...
    • Patent number 10,151,410
    • Issue date Dec 11, 2018
    • Waterworks Technology Development Organization Co., Ltd.
    • Yasushi Fujita
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Extendable and contractible flexible joint
    • Patent number 10,088,085
    • Issue date Oct 2, 2018
    • Waterworks Technology Development Organization Co., Ltd.
    • Kikuo Saito
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Pipe joint, packing ring, and method for mounting pipe joint
    • Patent number 9,890,883
    • Issue date Feb 13, 2018
    • Waterworks Technology Development Organization Co., Ltd.
    • Tamotsu Maenishi
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Device for blocking a flow passage using an inflatable bag
    • Patent number 9,638,347
    • Issue date May 2, 2017
    • Waterworks Technology Development Organization Co., Ltd.
    • Daisuke Yamamoto
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Sluice valve for operations
    • Patent number 9,004,090
    • Issue date Apr 14, 2015
    • Waterworks Technology Development Organization Co., Ltd.
    • Hisakazu Asai
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Separation prevention device for pipe joint
    • Patent number 8,444,187
    • Issue date May 21, 2013
    • Waterworks Technology Development Organization Co., Ltd.
    • Hiroyuki Bekki
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Separation prevention device for pipe joint
    • Patent number 8,308,202
    • Issue date Nov 13, 2012
    • Waterworks Technology Development Organization Co., Ltd.
    • Hiroyuki Bekki
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Method of shutting off conduit and pipe conduit shutoff apparatus
    • Patent number 8,186,648
    • Issue date May 29, 2012
    • Waterworks Technology Development Organization Co., Ltd.
    • Atsushi Sakai
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Gate valve device
    • Patent number 7,819,384
    • Issue date Oct 26, 2010
    • Waterworks Technology Development Organization
    • Kiyoharu Nakano
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Pipeline closing apparatus
    • Patent number 7,717,136
    • Issue date May 18, 2010
    • Waterworks Technology Development Organization Co., Ltd.
    • Atsushi Sakai
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Pipe joint
    • Patent number 7,354,073
    • Issue date Apr 8, 2008
    • Waterworks Technology Development Organization, Co., Ltd.
    • Kouichi Sakamoto
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Supporting device for non-averaged force
    • Patent number 7,328,874
    • Issue date Feb 12, 2008
    • Waterworks Technology Development Organization Co., Ltd.
    • Katsutoshi Tenma
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Sluicing valve device
    • Patent number 7,073,776
    • Issue date Jul 11, 2006
    • Waterworks Technology Development Organization Co., Ltd.
    • Mitsuhiro Mori
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Gate valve apparatus
    • Patent number 6,893,001
    • Issue date May 17, 2005
    • Waterworks Technology Development Organization Co., Ltd.
    • Tamotsu Maenishi
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Spacer-less type pipe joint and packing ring used for the same
    • Patent number 6,773,040
    • Issue date Aug 10, 2004
    • Waterworks Technology Development Organization Co., Ltd.
    • Kikuo Saito
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Branch pipe joint
    • Patent number D489434
    • Issue date May 4, 2004
    • Waterworks Technology Development Organization Co., Ltd.
    • Go Horikawa
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Flexible fluid-transport pipe joint apparatus
    • Patent number 6,659,511
    • Issue date Dec 9, 2003
    • Waterworks Technology Development Organization Co., Ltd.
    • Hideki Yoneyama
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Branch pipe joint
    • Patent number D481108
    • Issue date Oct 21, 2003
    • Waterworks Technology Development Organization Co., Ltd.
    • Go Horikawa
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Reinforcement fitting
    • Patent number 6,467,813
    • Issue date Oct 22, 2002
    • Waterworks Technology Development Organization Co., Ltd.
    • Yukio Takemura
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Tube joint
    • Patent number 6,371,530
    • Issue date Apr 16, 2002
    • Waterworks Technology Development Organization Co., Ltd.
    • Taichi Sato
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Flexible joint
    • Patent number D454623
    • Issue date Mar 19, 2002
    • Waterworks Technology Development Organization Co., Ltd.
    • Taichi Sato
    • D23 - Environmental heating and cooling

Patents Applicationslast 30 patents

  • Information Patent Application

    BRANCH PIPE FORMING APPARATUS, LID DOUBLING AS VALVE ELEMENT, BRANC...
    • Publication number 20230194030
    • Publication date Jun 22, 2023
    • WATERWORKS TECHNOLOGY DEVELOPMENT ORGANIZATION CO., LTD.
    • Gou HORIKAWA
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    GATE VALVE
    • Publication number 20220205546
    • Publication date Jun 30, 2022
    • WATERWORKS TECHNOLOGY DEVELOPMENT ORGANIZATION CO., LTD.
    • Hiroyuki BEKKI
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Disengagement Prevention Structure for Pipe Connecting Portion
    • Publication number 20220205568
    • Publication date Jun 30, 2022
    • Waterworks Technology Development Organization Co., Ltd.
    • Mitsuhiro Mori
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    GATE VALVE
    • Publication number 20210222816
    • Publication date Jul 22, 2021
    • WATERWORKS TECHNOLOGY DEVELOPMENT ORGANIZATION CO., LTD.
    • Gou HORIKAWA
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    HOUSING DEVICE AND METHOD FOR MOUNTING HOUSING DEVICE
    • Publication number 20210123553
    • Publication date Apr 29, 2021
    • WATERWORKS TECHNOLOGY DEVELOPMENT ORGANIZATION CO., LTD.
    • Daisuke Kuwagaki
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Valve Removal Method of Fluid Pipeline Structure, Fluid Pipeline St...
    • Publication number 20200386346
    • Publication date Dec 10, 2020
    • Waterworks Technology Development Organization Co., Ltd.
    • Go Horikawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    HERMETICALLY SEALING DEVICE AND HERMETICALLY SEALING METHOD
    • Publication number 20200011470
    • Publication date Jan 9, 2020
    • WATERWORKS TECHNOLOGY DEVELOPMENT ORGANIZATION CO., LTD.
    • Gou Horikawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    VALVE DEVICE
    • Publication number 20190257433
    • Publication date Aug 22, 2019
    • WATERWORKS TECHNOLOGY DEVELOPMENT ORGANIZATION CO., LTD.
    • Yasuyuki Nagamori
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    CORROSION PREVENTION APPARATUS AND CORROSION PREVENTION METHOD FOR...
    • Publication number 20180119846
    • Publication date May 3, 2018
    • Waterworks Technology Development Organization Co., Ltd.
    • Daisuke Kuwagaki
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    COATED EXPANDABLE-CONTRACTIBLE FLEXIBLE PIPE
    • Publication number 20170138527
    • Publication date May 18, 2017
    • WATERWORKS TECHNOLOGY DEVELOPMENT ORGANIZATION CO., LTD.
    • Hiroyuki BEKKI
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Device for Blocking Flow Passage Without Interrupting Flow
    • Publication number 20160265680
    • Publication date Sep 15, 2016
    • Waterworks Technology Development Organization Co., Ltd.
    • Daisuke Yamamoto
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    EXTENDING/CONTRACTING FLEXIBLE PIPE AND METHOD FOR ASSEMBLING EXTEN...
    • Publication number 20160178100
    • Publication date Jun 23, 2016
    • WATERWORKS TECHNOLOGY DEVELOPMENT ORGANIZATION CO., LTD.
    • Yasushi FUJITA
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Extendable and Contractible Flexible Joint
    • Publication number 20150338003
    • Publication date Nov 26, 2015
    • Waterworks Technology Development Organization Co., Ltd.
    • Kikuo Saito
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    PIPE JOINT, PACKING RING, AND METHOD FOR MOUNTING PIPE JOINT
    • Publication number 20130076027
    • Publication date Mar 28, 2013
    • WATERWORKS TECHNOLOGY DEVELOPMENT ORGANIZATION CO., LTD.
    • Tamotsu Maenishi
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    SEPARATION PREVENTION DEVICE FOR PIPE JOINT
    • Publication number 20120267889
    • Publication date Oct 25, 2012
    • Waterworks Technology Development Organization Co., Ltd.
    • Hiroyuki BEKKI
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Sluice Valve for Operations
    • Publication number 20120192962
    • Publication date Aug 2, 2012
    • WATERWORKS TECHNOLOGY DEVELOPMENT ORGANIZATION CO. LTD.
    • Hisakazu Asai
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    SEPARATION PREVENTION DEVICE FOR PIPE JOINT
    • Publication number 20100164224
    • Publication date Jul 1, 2010
    • WATERWORKS TECHNOLOGY DEVELOPMENT ORGANIZATION CO. LTD
    • Hiroyuki Bekki
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Method of Shutting Off Conduit and Pipe Conduit Shutoff Apparatus
    • Publication number 20090166573
    • Publication date Jul 2, 2009
    • WATERWORKS TECHNOLOGY DEVELOPMENT ORGANIZATION CO., LTD.
    • Atsushi Sakai
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Flexible pipe joint
    • Publication number 20040040606
    • Publication date Mar 4, 2004
    • WATERWORKS TECHNOLOGY DEVELOPMENT ORGANIZATION CO., LTD.
    • Hiroyuki Bekki
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Joint fluid transport pipe
    • Publication number 20020189692
    • Publication date Dec 19, 2002
    • WATERWORKS TECHNOLOGY DEVELOPMENT ORGANIZATION CO., LTD.
    • Taichi Sato
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Flexible fluid-transport pipe joint apparatus
    • Publication number 20010024037
    • Publication date Sep 27, 2001
    • WATERWORKS TECHNOLOGY DEVELOPMENT ORGANIZATION., LTD.
    • Hideki Yoneyama
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...