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Kazutaka Iwata

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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

    Power tool
    • Patent number 11,675,014
    • Issue date Jun 13, 2023
    • KOKI HOLDINGS CO., LTD.
    • Kazutaka Iwata
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Electric tool
    • Patent number 11,511,387
    • Issue date Nov 29, 2022
    • KOKI HOLDINGS CO., LTD.
    • Takuya Yoshinari
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Impact tool and method of controlling impact tool
    • Patent number 11,440,166
    • Issue date Sep 13, 2022
    • KOKI HOLDINGS CO., LTD.
    • Kazutaka Iwata
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Power tool
    • Patent number 11,099,241
    • Issue date Aug 24, 2021
    • KOKI HOLDINGS CO., LTD.
    • Kazutaka Iwata
    • H01 - BASIC ELECTRIC ELEMENTS
  • 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

    Impact tool and method of controlling impact tool
    • Patent number 10,562,160
    • Issue date Feb 18, 2020
    • KOKI HOLDINGS CO., LTD.
    • Kazutaka Iwata
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Electric tool
    • Patent number 10,525,579
    • Issue date Jan 7, 2020
    • KOKI HOLDINGS CO., LTD.
    • Hironori Mashiko
    • B24 - GRINDING POLISHING
  • 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 10,411,620
    • Issue date Sep 10, 2019
    • KOKI HOLDINGS CO., LTD.
    • Kazutaka Iwata
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Power tool
    • Patent number 10,183,384
    • Issue date Jan 22, 2019
    • KOKI HOLDINGS CO., LTD.
    • Nobuhiro Takano
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Electric tool
    • Patent number 10,171,011
    • Issue date Jan 1, 2019
    • KOKI HOLDINGS CO., LTD.
    • Nobuhiro Takano
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • 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

    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
  • Information Patent Grant

    Portable tool
    • Patent number 9,555,537
    • Issue date Jan 31, 2017
    • Hitachi Koki Co., Ltd.
    • Kazutaka Iwata
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Power tool
    • Patent number 9,391,491
    • Issue date Jul 12, 2016
    • Hitachi Koki Co., Ltd.
    • Kenichirou Yoshida
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Impact tool
    • Patent number 9,314,908
    • Issue date Apr 19, 2016
    • Hitachi Koki Co., Ltd.
    • Hideyuki Tanimoto
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Electric boring tool
    • Patent number 9,314,855
    • Issue date Apr 19, 2016
    • Hitachi Koki Co., Ltd.
    • Takahiro Ookubo
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Electric rotating tool
    • Patent number 9,114,519
    • Issue date Aug 25, 2015
    • Hitachi Koki Co., Ltd.
    • Kazutaka Iwata
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Power tool
    • Patent number 9,048,699
    • Issue date Jun 2, 2015
    • Hitachi Koki Co., Ltd.
    • Katsuhiro Oomori
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Power tool for performing soft-start control appropriated for motor...
    • Patent number 8,931,576
    • Issue date Jan 13, 2015
    • Hitachi Koki., Ltd.
    • Kazutaka Iwata
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Oil pulse tool
    • Patent number 8,925,645
    • Issue date Jan 6, 2015
    • Hitachi Koki Co., Ltd.
    • Tetsuhiro Harada
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Oil pulse tool
    • Patent number 8,640,789
    • Issue date Feb 4, 2014
    • Hitachi Koki Co., Ltd.
    • Tetsuhiro Harada
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Rotary striking tool
    • Patent number 8,607,892
    • Issue date Dec 17, 2013
    • Hitachi Koki Co., Ltd.
    • Yoshio Iimura
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Power tool
    • Patent number 8,541,913
    • Issue date Sep 24, 2013
    • Hitachi Koki Co., Ltd.
    • Kenichirou Yoshida
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Rotary striking tool
    • Patent number 8,360,166
    • Issue date Jan 29, 2013
    • Hitachi Koki Co., Ltd.
    • Yoshio Iimura
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Power tool
    • Patent number 8,253,285
    • Issue date Aug 28, 2012
    • Hitachi Koki Co., Ltd.
    • Kenichirou Yoshida
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

  • Information Patent Application

    Power Tool
    • Publication number 20220011372
    • Publication date Jan 13, 2022
    • Koki Holdings Co., Ltd.
    • Kazutaka Iwata
    • G01 - MEASURING TESTING
  • 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

    IMPACT TOOL AND METHOD OF CONTROLLING IMPACT TOOL
    • Publication number 20200180125
    • Publication date Jun 11, 2020
    • Koki Holdings Co., Ltd.
    • Kazutaka Iwata
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    ELECTRIC TOOL
    • Publication number 20200130127
    • Publication date Apr 30, 2020
    • Koki Holdings Co., Ltd.
    • Takuya YOSHINARI
    • B24 - GRINDING POLISHING
  • 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 20180219498
    • Publication date Aug 2, 2018
    • Hitachi Koki Co., Ltd.
    • Kazutaka Iwata
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    ELECTRIC TOOL
    • Publication number 20170341213
    • Publication date Nov 30, 2017
    • Hitachi Koki Co., Ltd.
    • Hironori MASHIKO
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    POWERED WORKING MACHINE
    • Publication number 20170312902
    • Publication date Nov 2, 2017
    • Hitachi Koki Co., Ltd.
    • Yuta NOGUCHI
    • 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

    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

    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

    ELECTRIC TOOL
    • Publication number 20160079887
    • Publication date Mar 17, 2016
    • Hitachi Koki Co., Ltd.
    • Nobuhiro Takano
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    POWER TOOL
    • Publication number 20160008961
    • Publication date Jan 14, 2016
    • Hitachi Koki Co., Ltd.
    • Nobuhiro Takano
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Power Tool
    • Publication number 20150355280
    • Publication date Dec 10, 2015
    • Hitachi Koki Co., Ltd.
    • Kazutaka Iwata
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    IMPACT TOOL AND METHOD OF CONTROLLING IMPACT TOOL
    • Publication number 20150336249
    • Publication date Nov 26, 2015
    • Hitachi Koki Co., Ltd.
    • Kazutaka Iwata
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    IMPACT TOOL
    • Publication number 20150303842
    • Publication date Oct 22, 2015
    • Hitachi Koki Co., Ltd.
    • Nobuhiro TAKANO
    • 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 20150222212
    • Publication date Aug 6, 2015
    • Hitachi Koki Co., Ltd.
    • Kazutaka Iwata
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    ELECTRIC TOOL AND FASTENING METHOD USING THE SAME
    • Publication number 20150047866
    • Publication date Feb 19, 2015
    • Hitachi Koki Co., Ltd.
    • Hironori Sakai
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    ELECTRIC TOOL AND FASTENING METHOD USING THE SAME
    • Publication number 20150042246
    • Publication date Feb 12, 2015
    • Hitachi Koki Co., Ltd.
    • Naoki Tadokoro
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    ELECTRIC POWER TOOL
    • Publication number 20140151080
    • Publication date Jun 5, 2014
    • Hitachi Koki Co., Ltd.
    • Satoshi Abe
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    PORTABLE TOOL
    • Publication number 20140116737
    • Publication date May 1, 2014
    • Hitachi Koki Co., Ltd.
    • Kazutaka IWATA
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Power Tool
    • Publication number 20140015350
    • Publication date Jan 16, 2014
    • Hitachi Koki Co., Ltd.
    • Kenichirou Yoshida
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • 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

    IMPACT TOOL
    • Publication number 20130333910
    • Publication date Dec 19, 2013
    • HITACHI KOKI CO., LTD.,
    • Hideyuki Tanimoto
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Power Tool
    • Publication number 20130189041
    • Publication date Jul 25, 2013
    • Hitachi Koki Co., Ltd.
    • Satoshi Abe
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Power Tool
    • Publication number 20130186661
    • Publication date Jul 25, 2013
    • Hitachi Koki Co., Ltd.
    • Takahiro Okubo
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Power Tool
    • Publication number 20130025892
    • Publication date Jan 31, 2013
    • Hitachi Koki Co., Ltd.
    • Hironori Mashiko
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Drilling Device
    • Publication number 20130028674
    • Publication date Jan 31, 2013
    • Hitachi Koki Co., Ltd.
    • Takahiro Okubo
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS