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Yoshimasa Hayama

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  • Hitachinaka-shi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Dust collector
    • Patent number 11,559,761
    • Issue date Jan 24, 2023
    • KOKI HOLDINGS CO., LTD.
    • Daisuke Kakegawa
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Cutting apparatus
    • Patent number 8,919,235
    • Issue date Dec 30, 2014
    • Hitachi Koki Co., Ltd.
    • Junichi Sudou
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Dust collector
    • Patent number 7,966,691
    • Issue date Jun 28, 2011
    • Hitachi Koki Co., Ltd.
    • Kumio Takahashi
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Dust collection device
    • Patent number 7,871,463
    • Issue date Jan 18, 2011
    • Hitachi Koki Co., Ltd.
    • Yoshimasa Hayama
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Dust collector
    • Patent number 7,296,323
    • Issue date Nov 20, 2007
    • Hitachi Koki Co., Ltd.
    • Yoshimasa Hayama
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

  • Information Patent Application

    ELECTRIC WORK MACHINE AND ELECTRIC WORK MACHINE SYSTEM
    • Publication number 20210237252
    • Publication date Aug 5, 2021
    • Koki Holdings Co., Ltd.
    • Tatsuya ITO
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Application

    DUST COLLECTOR
    • Publication number 20210069626
    • Publication date Mar 11, 2021
    • Koki Holdings Co., Ltd.
    • Daisuke KAKEGAWA
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Application

    PORTABLE CLEANER PROVIDED WITH EXHAUST REGULATING UNIT
    • Publication number 20140082882
    • Publication date Mar 27, 2014
    • Hitachi Koki Co., Ltd.
    • SHINJI KAWAMATA
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Application

    CUTTING APPARATUS
    • Publication number 20100236369
    • Publication date Sep 23, 2010
    • Hitachi Koki Co., Ltd
    • Junichi Sudou
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    DUST COLLECTOR
    • Publication number 20100154161
    • Publication date Jun 24, 2010
    • Kumio Takahashi
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    Dust Collection Device
    • Publication number 20080229719
    • Publication date Sep 25, 2008
    • HITACHI KOKI CO., LTD.
    • Yoshimasa HAYAMA
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Application

    Dust collector
    • Publication number 20040060145
    • Publication date Apr 1, 2004
    • Hitachi Koki Co, Ltd.
    • Yoshimasa Hayama
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR