TREA

Yasuaki Koiwa

Follow

Person

  • Tokyo, JP
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Wrench socket for sprinkler head
    • Patent number D1029599
    • Issue date Jun 4, 2024
    • Senju Sprinkler Co., Ltd.
    • Yasuaki Koiwa
    • D08 - Tools and hardware
  • Information Patent Grant

    Protective cap for sprinkler head
    • Patent number D1000585
    • Issue date Oct 3, 2023
    • Senju Sprinkler Co., Ltd.
    • Yasuaki Koiwa
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Sprinkler head accessory
    • Patent number 11,642,557
    • Issue date May 9, 2023
    • Senju Sprinkler Co., Ltd.
    • Yasuaki Koiwa
    • B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
  • Information Patent Grant

    Sprinkler head
    • Patent number 11,511,144
    • Issue date Nov 29, 2022
    • Senju Sprinkler Co., Ltd.
    • Yasuaki Koiwa
    • A62 - LIFE-SAVING FIRE-FIGHTING
  • Information Patent Grant

    Sprinkler head accessory
    • Patent number D964517
    • Issue date Sep 20, 2022
    • Senju Sprinkler Co., Ltd.
    • Yasuaki Koiwa
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Sprinkler head accessory
    • Patent number D963110
    • Issue date Sep 6, 2022
    • Senju Sprinkler Co., Ltd.
    • Yasuaki Koiwa
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Sprinkler head accessory
    • Patent number D961727
    • Issue date Aug 23, 2022
    • Senju Sprinkler Co., Ltd.
    • Yasuaki Koiwa
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Sprinkler head
    • Patent number 11,383,114
    • Issue date Jul 12, 2022
    • Senju Sprinkler Co., Ltd.
    • Koki Sato
    • B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
  • Information Patent Grant

    Sprinkler head
    • Patent number 11,324,980
    • Issue date May 10, 2022
    • Senju Sprinkler Co., Ltd.
    • Yasuaki Koiwa
    • A62 - LIFE-SAVING FIRE-FIGHTING
  • Information Patent Grant

    Protector for heat-sensitive element of sprinkler head
    • Patent number 11,160,999
    • Issue date Nov 2, 2021
    • Senju Sprinkler Co., Ltd.
    • Yasuaki Koiwa
    • B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
  • Information Patent Grant

    Spring for sprinkler head
    • Patent number D895416
    • Issue date Sep 8, 2020
    • SENJU SPRINKLER CO., LTD.
    • Yasuaki Koiwa
    • D08 - Tools and hardware
  • Information Patent Grant

    Protector for sprinkler head
    • Patent number D892269
    • Issue date Aug 4, 2020
    • SENJU SPRINKLER CO., LTD.
    • Yasuaki Koiwa
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Alloy for a fusible plug and a fusible plug
    • Patent number 10,036,479
    • Issue date Jul 31, 2018
    • Senju Metal Industry Co., Ltd.
    • Rikiya Kato
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Wrench for sprinkler head
    • Patent number D799924
    • Issue date Oct 17, 2017
    • Senju Sprinkler Co., Ltd.
    • Yasuaki Koiwa
    • D08 - Tools and hardware
  • Information Patent Grant

    Sprinkler head
    • Patent number 9,630,039
    • Issue date Apr 25, 2017
    • Senju Sprinkler Co., Ltd.
    • Yasuaki Koiwa
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Sprinkler head body
    • Patent number D781399
    • Issue date Mar 14, 2017
    • Senju Sprinkler Co., Ltd.
    • Yasuaki Koiwa
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Protecting cap and sprinkler head
    • Patent number 9,463,343
    • Issue date Oct 11, 2016
    • Senju Sprinkler Co., Ltd.
    • Yasuaki Koiwa
    • B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
  • Information Patent Grant

    Sprinkler head
    • Patent number 9,339,675
    • Issue date May 17, 2016
    • Senju Sprinkler Co., Ltd.
    • Yasuaki Koiwa
    • A62 - LIFE-SAVING FIRE-FIGHTING
  • Information Patent Grant

    Protective cap of sprinkler head and sprinkler head
    • Patent number 9,320,929
    • Issue date Apr 26, 2016
    • Senju Sprinkler Co., Ltd.
    • Yasuaki Koiwa
    • A62 - LIFE-SAVING FIRE-FIGHTING
  • Information Patent Grant

    Sprinkler head protective cap
    • Patent number D721419
    • Issue date Jan 20, 2015
    • Senju Sprinkler Co., Ltd.
    • Yasuaki Koiwa
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Sprinkler head protective cap
    • Patent number D721418
    • Issue date Jan 20, 2015
    • Senju Sprinkler Co., Ltd.
    • Yasuaki Koiwa
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Valve mechanism opened in response to extremely high temperature
    • Patent number 8,844,554
    • Issue date Sep 30, 2014
    • Kabushiki Kaisha Toshiba
    • Tetsuro Kikuchi
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Sprinkler protective cap
    • Patent number D683425
    • Issue date May 28, 2013
    • Senju Sprinkler Co., Ltd.
    • Yasuaki Koiwa
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Sprinkler cover plate assembly
    • Patent number D683426
    • Issue date May 28, 2013
    • Senju Sprinkler Co., Ltd.
    • Yasuaki Koiwa
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Sprinkler cover plate assembly installation tool
    • Patent number D673825
    • Issue date Jan 8, 2013
    • Senju Sprinkler Co., Ltd.
    • Yasuaki Koiwa
    • D08 - Tools and hardware
  • Information Patent Grant

    Sprinkler protective cap removal tool
    • Patent number D673826
    • Issue date Jan 8, 2013
    • Senju Sprinkler Co., Ltd.
    • Yasuaki Koiwa
    • D08 - Tools and hardware
  • Information Patent Grant

    Sprinkler cover plate assembly
    • Patent number D663009
    • Issue date Jul 3, 2012
    • Senju Sprinkler Co., Ltd.
    • Yasuaki Koiwa
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Sprinkler head body
    • Patent number D638913
    • Issue date May 31, 2011
    • Senju Sprinkler Co., Ltd.
    • Yasuaki Koiwa
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Sprinkler head
    • Patent number D603479
    • Issue date Nov 3, 2009
    • Senju Sprinkler Co., Ltd.
    • Yasuaki Koiwa
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Heat collector assembly for sprinkler head
    • Patent number D598068
    • Issue date Aug 11, 2009
    • Senju Sprinkler Co., Ltd.
    • Yasuaki Koiwa
    • D23 - Environmental heating and cooling

Patents Applicationslast 30 patents

  • Information Patent Application

    ACCESSORY FOR SIDEWALL SPRINKLER HEAD
    • Publication number 20240408634
    • Publication date Dec 12, 2024
    • SENJU SPRINKLER CO., LTD.
    • Yasuaki Koiwa
    • B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
  • Information Patent Application

    Sprinkler Head Accessory
    • Publication number 20210322811
    • Publication date Oct 21, 2021
    • SENJU SPRINKLER CO., LTD.
    • Yasuaki Koiwa
    • B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
  • Information Patent Application

    Sprinkler Head
    • Publication number 20210260423
    • Publication date Aug 26, 2021
    • SENJU SPRINKLER CO., LTD.
    • Yasuaki Koiwa
    • B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
  • Information Patent Application

    Sprinkler Head
    • Publication number 20210094051
    • Publication date Apr 1, 2021
    • SENJU SPRINKLER CO., LTD.
    • Yasuaki Koiwa
    • A62 - LIFE-SAVING FIRE-FIGHTING
  • Information Patent Application

    Sprinkler Head
    • Publication number 20200360750
    • Publication date Nov 19, 2020
    • SENJU SPRINKLER CO., LTD.
    • Yasuaki Koiwa
    • A62 - LIFE-SAVING FIRE-FIGHTING
  • Information Patent Application

    Sprinkler Head
    • Publication number 20200282246
    • Publication date Sep 10, 2020
    • SENJU SPRINKLER CO., LTD.
    • Koki Sato
    • B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
  • Information Patent Application

    PROTECTOR FOR HEAT-SENSITIVE ELEMENT OF SPRINKLER HEAD
    • Publication number 20200078626
    • Publication date Mar 12, 2020
    • SENJU SPRINKLER CO., LTD.
    • Yasuaki Koiwa
    • B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
  • Information Patent Application

    Protective Cap of Sprinkler Head and Sprinkler Head
    • Publication number 20150083442
    • Publication date Mar 26, 2015
    • SENJU SPRINKLER CO., LTD.
    • Yasuaki Koiwa
    • A62 - LIFE-SAVING FIRE-FIGHTING
  • Information Patent Application

    Sprinkler Head Accessory Mounting Tool
    • Publication number 20150013131
    • Publication date Jan 15, 2015
    • SENJU SPRINKLER CO., LTD.
    • Yasuaki Koiwa
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Protecting Cap and Sprinkler Head
    • Publication number 20130306334
    • Publication date Nov 21, 2013
    • SENJU SPRINKLER CO., LTD.
    • Yasuaki Koiwa
    • B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
  • Information Patent Application

    Sprinkler Head
    • Publication number 20130020406
    • Publication date Jan 24, 2013
    • SENJU SPRINKLER CO., LTD.
    • Yasuaki Koiwa
    • A62 - LIFE-SAVING FIRE-FIGHTING
  • Information Patent Application

    SPRINKLER HEAD
    • Publication number 20120090859
    • Publication date Apr 19, 2012
    • Schaeffler Technologies GmbH & Co. KG
    • Yasuaki Koiwa
    • A62 - LIFE-SAVING FIRE-FIGHTING
  • Information Patent Application

    VALVE MECHANISM OPENED IN RESPONSE TO EXTREMELY HIGH TEMPERATURE
    • Publication number 20110155265
    • Publication date Jun 30, 2011
    • Tetsuro Kikuchi
    • A62 - LIFE-SAVING FIRE-FIGHTING
  • Information Patent Application

    Sprinkler Head Cover And A Sprinkler Head
    • Publication number 20070215720
    • Publication date Sep 20, 2007
    • SENJU SPRINKLER CO., LTD.
    • Yasuaki Koiwa
    • A62 - LIFE-SAVING FIRE-FIGHTING
  • Information Patent Application

    Cover assembly for a concealed sprinkler head
    • Publication number 20030196821
    • Publication date Oct 23, 2003
    • Tetsuro Kikuchi
    • A62 - LIFE-SAVING FIRE-FIGHTING