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Kenji Niwa

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Patents Grantslast 30 patents

  • Information Patent Grant

    Motorized cutter, motorized cutter with wheels, and cutting method
    • Patent number 8,926,024
    • Issue date Jan 6, 2015
    • Hitachi Koki Co., Ltd.
    • Yukihiro Shima
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Portable cutting machine
    • Patent number 7,874,075
    • Issue date Jan 25, 2011
    • Hitachi Koki Co., Ltd.
    • Kenji Niwa
    • B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
  • Information Patent Grant

    Portable cutting tool
    • Patent number 7,866,051
    • Issue date Jan 11, 2011
    • Hitachi Koki Co., Ltd.
    • Kenji Niwa
    • B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
  • Information Patent Grant

    Portable electric cutting apparatus
    • Patent number 7,861,417
    • Issue date Jan 4, 2011
    • Hitachi Koki Co., Ltd.
    • Hideyuki Tanimoto
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Electric tool having electric motor with first and second coils hav...
    • Patent number 7,605,513
    • Issue date Oct 20, 2009
    • Hitachi Koki Co., Ltd.
    • Hideyuki Tanimoto
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Portable cutting tool
    • Patent number 7,434,321
    • Issue date Oct 14, 2008
    • Hitachi Koki Co., Ltd.
    • Kenji Niwa
    • B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
  • Information Patent Grant

    Portable cutting tool
    • Patent number 7,281,332
    • Issue date Oct 16, 2007
    • Hitachi Koki Co., Ltd.
    • Kenji Niwa
    • B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
  • Information Patent Grant

    Portable electric cutting apparatus
    • Patent number 7,275,326
    • Issue date Oct 2, 2007
    • Hitachi Koki Co., Ltd.
    • Hideyuki Tanimoto
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Portable electric cutting device with blower mechanism
    • Patent number 7,103,979
    • Issue date Sep 12, 2006
    • Hitachi Koki Co., Ltd.
    • Kenichirou Yoshida
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Rotatable circular saw with parallelism adjustment function
    • Patent number 5,848,472
    • Issue date Dec 15, 1998
    • Hitachi Koki Co., Ltd.
    • Naoya Eto
    • B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...

Patents Applicationslast 30 patents

  • Information Patent Application

    2-CYCLE ENGINE AND ENGINE-POWERED WORKING MACHINE HAVING THE SAME
    • Publication number 20130327307
    • Publication date Dec 12, 2013
    • Hitachi Koki Co., Ltd.
    • Kenji Niwa
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Application

    MOTORIZED CUTTER, MOTORIZED CUTTER WITH WHEELS, AND CUTTING METHOD
    • Publication number 20110303060
    • Publication date Dec 15, 2011
    • Yukihiro Shima
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    PORTABLE CUTTING MACHINE
    • Publication number 20090064510
    • Publication date Mar 12, 2009
    • HITACHI KOKI CO., LTD.
    • Kenji Niwa
    • B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
  • Information Patent Application

    Portable electric cutting apparatus
    • Publication number 20070271799
    • Publication date Nov 29, 2007
    • Hitachi Koki Co., Ltd.
    • Hideyuki Tanimoto
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    Portable cutting tool
    • Publication number 20060016082
    • Publication date Jan 26, 2006
    • Hitachi Koki, Co., Ltd.
    • Kenji Niwa
    • B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
  • Information Patent Application

    Portable cutting tool
    • Publication number 20050278960
    • Publication date Dec 22, 2005
    • Hitachi Koki Co., Ltd.
    • Kenji Niwa
    • B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
  • Information Patent Application

    Portable cutting tool
    • Publication number 20050278961
    • Publication date Dec 22, 2005
    • Hitachi Koki Co., Ltd.
    • Kenji Niwa
    • B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
  • Information Patent Application

    Electric motor, electric tool having the motor, and electric motor...
    • Publication number 20050168095
    • Publication date Aug 4, 2005
    • Hideyuki Tanimoto
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    Portable electric cutting apparatus
    • Publication number 20050160608
    • Publication date Jul 28, 2005
    • Hitachi Koki Co., Ltd.
    • Hideyuki Tanimoto
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    Portable electric cutting device with blower mechanism
    • Publication number 20040107584
    • Publication date Jun 10, 2004
    • Kenichirou Yoshida
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR