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Yuji Kishima

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  • Hitachinaka-shi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Charging device having two charging modes
    • Patent number 11,979,039
    • Issue date May 7, 2024
    • KOKI HOLDINGS CO., LTD.
    • Akihiro Kobayashi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    DC power supply device
    • Patent number 11,626,807
    • Issue date Apr 11, 2023
    • KOKI HOLDINGS CO., LTD.
    • Takuya Yoshinari
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    DC power supply device
    • Patent number 11,490,543
    • Issue date Nov 1, 2022
    • KOKI HOLDINGS CO., LTD.
    • Naoto Ichihashi
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    DC power supply device
    • Patent number 11,211,868
    • Issue date Dec 28, 2021
    • KOKI HOLDINGS CO., LTD.
    • Takuya Yoshinari
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Battery charger capable of efficiently cooling secondary battery in...
    • Patent number 9,917,452
    • Issue date Mar 13, 2018
    • Hitachi Koki Co., Ltd.
    • Yuji Kishima
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Electric tool
    • Patent number 9,561,548
    • Issue date Feb 7, 2017
    • Hitachi Koki Co., Ltd.
    • Yuji Kishima
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Backpack-type power supply
    • Patent number 9,496,536
    • Issue date Nov 15, 2016
    • Hitachi Koki Co., Ltd.
    • Takuya Yoshinari
    • A45 - HAND OR TRAVELLING ARTICLES
  • Information Patent Grant

    Electric tool
    • Patent number 9,289,832
    • Issue date Mar 22, 2016
    • Hitachi Koki Co., Ltd.
    • Yuji Kishima
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Rechargeable battery
    • Patent number D699672
    • Issue date Feb 18, 2014
    • Hitachi Koki Co., Ltd.
    • Shingo Kosugi
    • D13 - Equipment for production, distribution, or transformation of energy
  • Information Patent Grant

    Electric power tool
    • Patent number 8,513,838
    • Issue date Aug 20, 2013
    • Hitachi Koki Co., Ltd.
    • Junichi Toukairin
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS

Patents Applicationslast 30 patents

  • Information Patent Application

    ELECTRIC DEVICE
    • Publication number 20240118014
    • Publication date Apr 11, 2024
    • Koki Holdings Co., Ltd.
    • Yuji KISHIMA
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Application

    ELECTRIC DEVICE
    • Publication number 20240102718
    • Publication date Mar 28, 2024
    • Koki Holdings Co., Ltd.
    • Yuji KISHIMA
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Application

    DC POWER SUPPLY DEVICE
    • Publication number 20220216799
    • Publication date Jul 7, 2022
    • Koki Holdings Co., Ltd.
    • Takuya YOSHINARI
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    CHARGING DEVICE
    • Publication number 20210249871
    • Publication date Aug 12, 2021
    • Koki Holdings Co., Ltd.
    • Akihiro KOBAYASHI
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    DC POWER SUPPLY DEVICE
    • Publication number 20210076535
    • Publication date Mar 11, 2021
    • Koki Holdings Co., Ltd.
    • Naoto ICHIHASHI
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    DC POWER SUPPLY DEVICE
    • Publication number 20200295659
    • Publication date Sep 17, 2020
    • Koki Holdings Co., Ltd.
    • Takuya YOSHINARI
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    ELECTRIC TOOL
    • Publication number 20160199972
    • Publication date Jul 14, 2016
    • Hitachi Koki Co., Ltd.
    • Yuji KISHIMA
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Backpack-Type Power Supply
    • Publication number 20150255773
    • Publication date Sep 10, 2015
    • HITACHI KOKI CO. LTD.
    • Takuya Yoshinari
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    BATTERY CHARGER CAPABLE OF EFFICIENTLY COOLING SECONDARY BATTERY IN...
    • Publication number 20150084591
    • Publication date Mar 26, 2015
    • Hitachi Koki Co., Ltd.
    • Yuji Kishima
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    ELECTRIC POWER TOOL
    • Publication number 20130264987
    • Publication date Oct 10, 2013
    • Hitachi Koki Co., Ltd.
    • Hiroki Uchida
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    ELECTRIC TOOL
    • Publication number 20120319509
    • Publication date Dec 20, 2012
    • Hitachi Koki Co., Ltd.
    • Yuji KISHIMA
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Electric power tool
    • Publication number 20100283332
    • Publication date Nov 11, 2010
    • Junichi TOUKAIRIN
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS