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Tomoyuki Kawahara

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  • Hitachinaka, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Jig saw
    • Patent number D792182
    • Issue date Jul 18, 2017
    • Hitachi Koki Co., Ltd.
    • Megumi Ishikawa
    • D08 - Tools and hardware
  • Information Patent Grant

    Rechargeable battery
    • Patent number D689432
    • Issue date Sep 10, 2013
    • Hitachi Koki Co., Ltd.
    • Takafumi Itoh
    • D13 - Equipment for production, distribution, or transformation of energy
  • Information Patent Grant

    Portable plane
    • Patent number D678023
    • Issue date Mar 19, 2013
    • Hitachi Koki Co., Ltd.
    • Takafumi Itoh
    • D08 - Tools and hardware
  • Information Patent Grant

    Portable electric driver
    • Patent number D675500
    • Issue date Feb 5, 2013
    • Hitachi Koki Co., Ltd.
    • Takeshi Taniguchi
    • D08 - Tools and hardware
  • Information Patent Grant

    Engine
    • Patent number D623197
    • Issue date Sep 7, 2010
    • Hitachi Koki Co., Ltd.
    • Satoshi Hotta
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Battery pack
    • Patent number D622661
    • Issue date Aug 31, 2010
    • Hitachi Koki Co., Ltd.
    • Kenichi Yamada
    • D13 - Equipment for production, distribution, or transformation of energy
  • Information Patent Grant

    Nailing machine
    • Patent number D618976
    • Issue date Jul 6, 2010
    • Hitachi Koki Co., Ltd.
    • Takeshi Taniguchi
    • D08 - Tools and hardware
  • Information Patent Grant

    Portable electric saw
    • Patent number D595552
    • Issue date Jul 7, 2009
    • Hitachi Koki Co., Ltd.
    • Takeshi Taniguchi
    • D08 - Tools and hardware
  • Information Patent Grant

    Portable electric hammer drill
    • Patent number D592028
    • Issue date May 12, 2009
    • Hitachi Koki Co., Ltd.
    • Takeshi Taniguchi
    • D08 - Tools and hardware
  • 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

    Portable electric driver
    • Patent number D585716
    • Issue date Feb 3, 2009
    • Hitachi Koki Co., Ltd.
    • Takeshi Taniguchi
    • D08 - Tools and hardware
  • Information Patent Grant

    Battery pack
    • Patent number D553562
    • Issue date Oct 23, 2007
    • Hitachi Koki Co., Ltd.
    • Masanori Okada
    • D13 - Equipment for production, distribution, or transformation of energy
  • Information Patent Grant

    Reciprocating saw
    • Patent number D551930
    • Issue date Oct 2, 2007
    • Hitachi Koki Co., Ltd.
    • Kenichi Yamada
    • D08 - Tools and hardware
  • Information Patent Grant

    Battery pack
    • Patent number D544436
    • Issue date Jun 12, 2007
    • Hitachi Koki, Co., Ltd.
    • Tomoyuki Kawahara
    • D13 - Equipment for production, distribution, or transformation of energy