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Toshiaki Koizumi

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  • Hitachinaka, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Electric power tool
    • Patent number 11,770,088
    • Issue date Sep 26, 2023
    • KOKI HOLDINGS CO., LTD.
    • Kazutaka Iwata
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Electric tool
    • Patent number 11,123,846
    • Issue date Sep 21, 2021
    • KOKI HOLDINGS CO., LTD.
    • Toshiaki Koizumi
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Electric power tool
    • Patent number 11,070,160
    • Issue date Jul 20, 2021
    • Koki Holdings Co., Lid.
    • Kazutaka Iwata
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Power tool
    • Patent number 10,886,764
    • Issue date Jan 5, 2021
    • KOKI HOLDINGS CO., LTD.
    • Yoshikazu Kawano
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Power Tool
    • Patent number 10,744,633
    • Issue date Aug 18, 2020
    • KOKI HOLDINGS CO., LTD.
    • Takuya Yoshinari
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Power tool
    • Patent number 10,717,138
    • Issue date Jul 21, 2020
    • KOKI HOLDINGS CO., LTD.
    • Takuya Yoshinari
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Electric power tool
    • Patent number 10,536,056
    • Issue date Jan 14, 2020
    • KOKI HOLDINGS CO., LTD.
    • Toshiaki Koizumi
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Electric tool
    • Patent number 10,505,473
    • Issue date Dec 10, 2019
    • KOKI HOLDINGS CO., LTD.
    • Nobuhiro Takano
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Power tool
    • Patent number 10,307,841
    • Issue date Jun 4, 2019
    • KOKI HOLDINGS CO., LTD.
    • Takuya Yoshinari
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Power tool and battery pack
    • Patent number 10,205,198
    • Issue date Feb 12, 2019
    • KOKI HOLDINGS CO., LTD.
    • Yoshikazu Kawano
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Electric power tool
    • Patent number 10,033,323
    • Issue date Jul 24, 2018
    • Hitachi Koki Co., Ltd.
    • Kazutaka Iwata
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Electric power tool
    • Patent number 9,793,847
    • Issue date Oct 17, 2017
    • Hitachi Koki Co., Ltd.
    • Kazutaka Iwata
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Power tool
    • Patent number 9,769,990
    • Issue date Sep 26, 2017
    • Hitachi Koki Co., Ltd.
    • Toshiaki Koizumi
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Electric tool
    • Patent number 9,768,713
    • Issue date Sep 19, 2017
    • Hitachi Koki Co., Ltd.
    • Toshiaki Koizumi
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Power tool provided with circuit board
    • Patent number 9,457,459
    • Issue date Oct 4, 2016
    • Hitachi Koki Co., Ltd.
    • Naoki Tadokoro
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS

Patents Applicationslast 30 patents

  • Information Patent Application

    ELECTRIC POWER TOOL
    • Publication number 20210336575
    • Publication date Oct 28, 2021
    • Koki Holdings Co., Ltd.
    • Kazutaka Iwata
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    POWER TOOL
    • Publication number 20190337065
    • Publication date Nov 7, 2019
    • Koki Holdings Co., Ltd.
    • Takuya Yoshinari
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    Power Tool
    • Publication number 20190001479
    • Publication date Jan 3, 2019
    • Hitachi Koki Co., Ltd.
    • Takuya Yoshinari
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    ELECTRIC POWER TOOL
    • Publication number 20180331648
    • Publication date Nov 15, 2018
    • Koki Holdings Co., Ltd.
    • Kazutaka Iwata
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    Power Tool
    • Publication number 20180071843
    • Publication date Mar 15, 2018
    • Hitachi Koki Co., Ltd.
    • Takuya Yoshinari
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Power Tool
    • Publication number 20180048173
    • Publication date Feb 15, 2018
    • Hitachi Koki Co., Ltd.
    • Yoshikazu Kawano
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    POWER TOOL AND BATTERY PACK
    • Publication number 20170194670
    • Publication date Jul 6, 2017
    • Hitachi Koki Co., Ltd.
    • Yoshikazu KAWANO
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    ELECTRIC TOOL
    • Publication number 20170190027
    • Publication date Jul 6, 2017
    • Hitachi Koki Co., Ltd.
    • Toshiaki KOIZUMI
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    ELECTRIC TOOL
    • Publication number 20170070168
    • Publication date Mar 9, 2017
    • Hitachi Koki Co., Ltd.
    • Nobuhiro Takano
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    WORK TOOL
    • Publication number 20170012572
    • Publication date Jan 12, 2017
    • Hitachi Koki Co., Ltd.
    • Nobuhiro Takano
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    ELECTRICAL POWER TOOL
    • Publication number 20160250743
    • Publication date Sep 1, 2016
    • Hitachi Koki Co., Ltd.
    • Hajime KIKUCHI
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    ELECTRIC TOOL
    • Publication number 20160204718
    • Publication date Jul 14, 2016
    • Hitachi Koki Co., Ltd.
    • Toshiaki Koizumi
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    ELECTRIC POWER TOOL
    • Publication number 20160197573
    • Publication date Jul 7, 2016
    • Hitachi Koki Co., Ltd.
    • Kazuhiko Iwata
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    POWER TOOL
    • Publication number 20160111984
    • Publication date Apr 21, 2016
    • Hitachi Koki Co., Ltd.
    • Toshiaki Koizumi
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Power Tool
    • Publication number 20150289451
    • Publication date Oct 15, 2015
    • Hitachi Koki Co., Ltd.
    • Toshiaki Koizumi
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Electric Power Tool
    • Publication number 20150288259
    • Publication date Oct 8, 2015
    • Hitachi Koki Co., Ltd.
    • Toshiaki Koizumi
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Electric Power Tool
    • Publication number 20140001993
    • Publication date Jan 2, 2014
    • Hitachi Koki Co., Ltd.
    • Kazutaka Iwata
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    Power Tool Provided With Circuit Board
    • Publication number 20130000934
    • Publication date Jan 3, 2013
    • Hitachi Koki Co., Ltd.
    • Naoki Tadokoro
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS