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Yoshikazu Yokoyama

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  • Ibaraki, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Working machine
    • Patent number 12,030,129
    • Issue date Jul 9, 2024
    • KOKI HOLDINGS CO., LTD.
    • Ryosuke Nakano
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Powered tool
    • Patent number 11,926,011
    • Issue date Mar 12, 2024
    • KOKI HOLDINGS CO., LTD.
    • Ryosuke Nakano
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Power tool
    • Patent number 11,780,071
    • Issue date Oct 10, 2023
    • KOKI HOLDINGS CO., LTD.
    • Yasutaka Shimizu
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Portable cutting machine
    • Patent number 9,144,923
    • Issue date Sep 29, 2015
    • Hitachi Koki Co., Ltd.
    • Yoshikazu Yokoyama
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Blower apparatus and an air conveying apparatus
    • Patent number 8,984,710
    • Issue date Mar 24, 2015
    • Hitachi Koki Co., Ltd.
    • Yoshikazu Yokoyama
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Engine blower
    • Patent number D638035
    • Issue date May 17, 2011
    • Hitachi Koki Co., Ltd.
    • Shingo Kosugi
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Engine blower
    • Patent number D591916
    • Issue date May 5, 2009
    • Hitachi Koki Co., Ltd.
    • Shingo Kosugi
    • D32 - Washing, cleaning, or drying machine
  • Information Patent Grant

    Electric tool and its insulating method
    • Patent number 6,909,207
    • Issue date Jun 21, 2005
    • Hitachi Koki Co., Ltd.
    • Tomoya Ikeda
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Electric power tool
    • Patent number 6,863,135
    • Issue date Mar 8, 2005
    • Hitachi Koki Co., Ltd.
    • Junichi Kamimura
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Electric power tool
    • Patent number 6,619,410
    • Issue date Sep 16, 2003
    • Hitachi Koki Co., Ltd.
    • Junichi Kamimura
    • B24 - GRINDING POLISHING

Patents Applicationslast 30 patents

  • Information Patent Application

    WORKING MACHINE
    • Publication number 20220072638
    • Publication date Mar 10, 2022
    • Koki Holdings Co., Ltd.
    • Ryosuke NAKANO
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    POWERED TOOL
    • Publication number 20210252657
    • Publication date Aug 19, 2021
    • Koki Holdings Co., Ltd.
    • Ryosuke NAKANO
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    POWER TOOL
    • Publication number 20210187722
    • Publication date Jun 24, 2021
    • Koki Holdings Co., Ltd.
    • Yasutaka SHIMIZU
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    PORTABLE CUTTING MACHINE
    • Publication number 20130180116
    • Publication date Jul 18, 2013
    • Hitachi Koki Co., Ltd.
    • Yoshikazu Yokoyama
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    Blower Apparatus and an Air Conveying Apparatus
    • Publication number 20120073080
    • Publication date Mar 29, 2012
    • Hitachi Koki Co., Ltd
    • Yoshikazu Yokoyama
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Application

    Electric power tool
    • Publication number 20040040399
    • Publication date Mar 4, 2004
    • Hitachi Koki Co., Ltd.
    • Junichi Kamimura
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Electric tool and its insulating method
    • Publication number 20030107273
    • Publication date Jun 12, 2003
    • Tomoya Ikeda
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    Electric power tool
    • Publication number 20020020540
    • Publication date Feb 21, 2002
    • Junichi Kamimura
    • B24 - GRINDING POLISHING