TREA

Yo Kawakami

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  • Mito, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Portable grinder
    • Patent number 5,558,571
    • Issue date Sep 24, 1996
    • Hitachi Koki Company Limited
    • Takeshi Toyoshima
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Combustion gas powered tool
    • Patent number 5,199,626
    • Issue date Apr 6, 1993
    • Hitachi Koki Company Limited
    • Tsunehisa Terayama
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Combustion gas powered fastener driving tool
    • Patent number 5,090,606
    • Issue date Feb 25, 1992
    • Hitachi Koki Company, Limited
    • Takuji Torii
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Internal-combustion piston driving apparatus having a decompression...
    • Patent number 4,913,331
    • Issue date Apr 3, 1990
    • Hitachi Koki Company, Ltd.
    • Hiromu Utsumi
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Combustion gas powered tool
    • Patent number 4,773,581
    • Issue date Sep 27, 1988
    • Hitachi Koki Company, Ltd.
    • Shinki Ohtsu
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS