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Tomomasa NISHIKAWA

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Patents Grantslast 30 patents

  • Information Patent Grant

    Electrical apparatus using battery pack
    • Patent number 11,837,741
    • Issue date Dec 5, 2023
    • KOKI HOLDINGS CO., LTD.
    • Takuhiro Murakami
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Battery pack, electrical device using battery pack, and electrical...
    • Patent number 11,824,169
    • Issue date Nov 21, 2023
    • KOKI HOLDINGS CO., LTD.
    • Tomomasa Nishikawa
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Battery pack, and electric appliance using battery pack
    • Patent number 11,757,293
    • Issue date Sep 12, 2023
    • KOKI HOLDINGS CO., LTD.
    • Tomomasa Nishikawa
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Electrical device system, electrical device, and power supply device
    • Patent number 11,745,272
    • Issue date Sep 5, 2023
    • KOKI HOLDINGS CO., LTD.
    • Yusuke Funabiki
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Battery pack and electrical apparatus using battery pack
    • Patent number 11,710,860
    • Issue date Jul 25, 2023
    • KOKI HOLDINGS CO., LTD.
    • Yasushi Nakano
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Power tool
    • Patent number RE49414
    • Issue date Feb 14, 2023
    • KOKI HOLDINGS CO., LTD.
    • Akira Matsushita
  • Information Patent Grant

    Work device
    • Patent number 11,469,699
    • Issue date Oct 11, 2022
    • KOKI HOLDINGS CO., LTD.
    • Yuki Ishikawa
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Electric tool
    • Patent number 11,418,094
    • Issue date Aug 16, 2022
    • KOKI HOLDINGS CO., LTD.
    • Akira Matsushita
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Battery pack, power tool, and battery pack and power tool set
    • Patent number 11,411,277
    • Issue date Aug 9, 2022
    • KOKI HOLDINGS CO., LTD.
    • Tomomasa Nishikawa
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Battery pack and electric apparatus using battery pack
    • Patent number 11,367,907
    • Issue date Jun 21, 2022
    • KOKI HOLDINGS CO., LTD.
    • Yasushi Nakano
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Battery pack, electrical device using battery pack, and electrical...
    • Patent number 11,205,820
    • Issue date Dec 21, 2021
    • KOKI HOLDINGS CO., LTD.
    • Hiroyuki Hanawa
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Electric working machine
    • Patent number 11,167,403
    • Issue date Nov 9, 2021
    • KOKI HOLDINGS CO., LTD.
    • Hideyuki Hashimoto
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Electric work machine
    • Patent number 11,052,530
    • Issue date Jul 6, 2021
    • KOKI HOLDINGS CO., LTD.
    • Akira Matsushita
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Rotary impact tool
    • Patent number 10,994,393
    • Issue date May 4, 2021
    • KOKI HOLDINGS CO., LTD.
    • Tetsuhiro Harada
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Abnormality reporting system for electric tools
    • Patent number 10,991,228
    • Issue date Apr 27, 2021
    • KOKI HOLDINGS CO., LTD.
    • Tomomasa Nishikawa
    • G08 - SIGNALLING
  • Information Patent Grant

    Cutting machine
    • Patent number 10,888,938
    • Issue date Jan 12, 2021
    • KOKI HOLDINGS CO., LTD.
    • Tomomasa Nishikawa
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Work machine
    • Patent number 10,836,019
    • Issue date Nov 17, 2020
    • KOKI HOLDINGS CO., LTD.
    • Akira Matsushita
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Power tool
    • Patent number 10,661,427
    • Issue date May 26, 2020
    • KOKI HOLDINGS CO., LTD.
    • Akira Matsushita
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Power tool
    • Patent number 10,562,107
    • Issue date Feb 18, 2020
    • KOKI HOLDINGS CO., LTD.
    • Tetsuhiro Harada
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Driver
    • Patent number 10,442,066
    • Issue date Oct 15, 2019
    • KOKI HOLDINGS CO., LTD.
    • Tomomasa Nishikawa
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Power tool anvil lock mechanism
    • Patent number 10,377,022
    • Issue date Aug 13, 2019
    • KOKI HOLDINGS CO., LTD.
    • Keita Saitou
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Abnormality reporting system and electric tool, and communication t...
    • Patent number 10,325,475
    • Issue date Jun 18, 2019
    • KOKI HOLDINGS CO., LTD.
    • Tomomasa Nishikawa
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Cutting machine
    • Patent number 10,286,462
    • Issue date May 14, 2019
    • KOKI HOLDINGS CO., LTD.
    • Tomomasa Nishikawa
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Electric device including sealing member between attachment part an...
    • Patent number 10,263,228
    • Issue date Apr 16, 2019
    • KOKI HOLDINGS CO., LTD.
    • Tomomasa Nishikawa
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Portable blower
    • Patent number 9,970,445
    • Issue date May 15, 2018
    • Hitachi Koki Co., Ltd.
    • Seiichi Kodato
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Power tool
    • Patent number 9,950,417
    • Issue date Apr 24, 2018
    • Hitachi Koki Co., Ltd.
    • Yutaka Ito
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Abnormality reporting system and electric tool, and communication t...
    • Patent number 9,940,813
    • Issue date Apr 10, 2018
    • Hitachi Koki Co., Ltd.
    • Tomomasa Nishikawa
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Portable blower
    • Patent number 9,869,327
    • Issue date Jan 16, 2018
    • Hitachi Koki Co., Ltd.
    • Seiichi Kodato
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Electric tool and communication plug for electric tool
    • Patent number 9,833,890
    • Issue date Dec 5, 2017
    • Hitachi Koki Co., Ltd.
    • Tatsuya Ito
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Impact tool
    • Patent number 9,616,558
    • Issue date Apr 11, 2017
    • Hitachi Koki Co., Ltd.
    • Tomomasa Nishikawa
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS

Patents Applicationslast 30 patents

  • Information Patent Application

    ADAPTER AND ELECTRIC APPARATUS
    • Publication number 20240106052
    • Publication date Mar 28, 2024
    • Koki Holdings Co., Ltd.
    • Tomomasa NISHIKAWA
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    BATTERY PACK, ELECTRIC DEVICE USING BATTERY PACK, AND ELECTRIC DEVI...
    • Publication number 20240055674
    • Publication date Feb 15, 2024
    • Koki Holdings Co., Ltd.
    • Tomomasa NISHIKAWA
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    ELECTRICAL APPARATUS USING BATTERY PACK
    • Publication number 20230318055
    • Publication date Oct 5, 2023
    • Koki Holdings Co., Ltd.
    • Yasushi Nakano
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    SENSOR UNIT, WORK MACHINE, COMMUNICATION METHOD, AND MANAGEMENT METHOD
    • Publication number 20230311292
    • Publication date Oct 5, 2023
    • Koki Holdings Co., Ltd.
    • Hisashi IROKAWA
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    BATTERY PACK, ELECTRIC APPARATUS USING BATTERY PACK, AND ELECTRIC A...
    • Publication number 20230275277
    • Publication date Aug 31, 2023
    • Koki Holdings Co., Ltd.
    • Yasushi Nakano
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    ELECTRIC DEVICE SYSTEM AND BATTERY PACK
    • Publication number 20230275295
    • Publication date Aug 31, 2023
    • Koki Holdings Co., Ltd.
    • Hayato Yamaguchi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    ELECTRICAL EQUIPMENT AND ELECTRICAL EQUIPMENT SYSTEM
    • Publication number 20230271310
    • Publication date Aug 31, 2023
    • Koki Holdings Co., Ltd.
    • Masashi TAKEHISA
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    BATTERY PACK AND ELECTRIC APPARATUS USING BATTERY PACK
    • Publication number 20220302510
    • Publication date Sep 22, 2022
    • Koki Holdings Co., Ltd.
    • Yasushi Nakano
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    ELECTRIC WORKING MACHINE
    • Publication number 20220048176
    • Publication date Feb 17, 2022
    • Koki Holdings Co., Ltd.
    • Hideyuki HASHIMOTO
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    DRIVING TOOL
    • Publication number 20210237241
    • Publication date Aug 5, 2021
    • Koki Holdings Co., Ltd.
    • Kenta HARADA
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    WORK DEVICE
    • Publication number 20200403544
    • Publication date Dec 24, 2020
    • Koki Holdings Co., Ltd.
    • Yuki ISHIKAWA
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    BATTERY PACK AND ELECTRIC APPARATUS USING BATTERY PACK
    • Publication number 20200212505
    • Publication date Jul 2, 2020
    • Koki Holdings Co., Ltd.
    • Yasushi Nakano
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    ELECTRICAL DEVICE SYSTEM, ELECTRICAL DEVICE, AND POWER SUPPLY DEVICE
    • Publication number 20200180044
    • Publication date Jun 11, 2020
    • Koki Holdings Co., Ltd.
    • Yusuke FUNABIKI
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    ELECTRICAL APPARATUS USING BATTERY PACK
    • Publication number 20200161609
    • Publication date May 21, 2020
    • Koki Holdings Co., Ltd.
    • Takuhiro Murakami
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    BATTERY PACK AND ELECTRICAL APPARATUS USING BATTERY PACK
    • Publication number 20200127339
    • Publication date Apr 23, 2020
    • Koki Holdings Co., Ltd.
    • Yasushi Nakano
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    ELECTRIC TOOL
    • Publication number 20200052559
    • Publication date Feb 13, 2020
    • Koki Holdings Co., Ltd.
    • Akira MATSUSHITA
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    CUTTING MACHINE
    • Publication number 20190262916
    • Publication date Aug 29, 2019
    • Koki Holdings Co., Ltd.
    • Tomomasa Nishikawa
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    BATTERY PACK, ELECTRIC APPLIANCE USING BATTERY PACK, AND ELECTRIC A...
    • Publication number 20190259984
    • Publication date Aug 22, 2019
    • Koki Holdings Co., Ltd.
    • Tomomasa NISHIKAWA
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    BATTERY PACK, ELECTRICAL DEVICE USING BATTERY PACK, AND ELECTRICAL...
    • Publication number 20190259985
    • Publication date Aug 22, 2019
    • Koki Holdings Co., Ltd.
    • Hiroyuki HANAWA
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    BATTERY PACK, AND ELECTRIC APPLIANCE USING BATTERY PACK
    • Publication number 20190260209
    • Publication date Aug 22, 2019
    • Koki Holdings Co., Ltd.
    • Tomomasa NISHIKAWA
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    SYSTEM
    • Publication number 20190244509
    • Publication date Aug 8, 2019
    • Koki Holdings Co., Ltd.
    • Tomomasa NISHIKAWA
    • G05 - CONTROLLING REGULATING
  • Information Patent Application

    BATTERY PACK, POWER TOOL, AND BATTERY PACK AND POWER TOOL SET
    • Publication number 20190148687
    • Publication date May 16, 2019
    • Koki Holdings Co., Ltd.
    • Tomomasa NISHIKAWA
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    POWER TOOL
    • Publication number 20190039228
    • Publication date Feb 7, 2019
    • Koki Holdings Co., Ltd.
    • Akira MATSUSHITA
    • B24 - GRINDING POLISHING
  • Information Patent Application

    Rotary Impact Tool
    • Publication number 20190030692
    • Publication date Jan 31, 2019
    • Koki Holdings Co., Ltd.
    • Tetsuhiro Harada
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    ABNORMALITY REPORTING SYSTEM AND ELECTRIC TOOL, AND COMMUNICATION T...
    • Publication number 20180204443
    • Publication date Jul 19, 2018
    • Hitachi Koki Co., Ltd.
    • Tomomasa NISHIKAWA
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Cutting Machine
    • Publication number 20180161891
    • Publication date Jun 14, 2018
    • Hitachi Koki Co., Ltd.
    • Tomomasa Nishikawa
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    WORK MACHINE
    • Publication number 20180001444
    • Publication date Jan 4, 2018
    • Hitachi Koki Co., Ltd.
    • Akira MATSUSHITA
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Driver
    • Publication number 20170297187
    • Publication date Oct 19, 2017
    • Hitachi Koki Co., Ltd.
    • Tomomasa NISHIKAWA
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    IMPACT TOOL
    • Publication number 20170259412
    • Publication date Sep 14, 2017
    • Hitachi Koki Co., Ltd.
    • Tomomasa NISHIKAWA
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    ELECTRIC WORKING MACHINE
    • Publication number 20170246735
    • Publication date Aug 31, 2017
    • Hitachi Koki Co., Ltd.
    • Hideyuki HASHIMOTO
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS