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Atsushi Sumi

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Patents Grantslast 30 patents

  • Information Patent Grant

    Oscillation tool
    • Patent number 9,670,998
    • Issue date Jun 6, 2017
    • Hitachi Koki Co., Ltd.
    • Atsushi Sumi
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

  • Information Patent Application

    OSCILLATION TOOL
    • Publication number 20140123785
    • Publication date May 8, 2014
    • Hitachi Koki Co., Ltd.
    • Atsushi Sumi
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    Screw Tightening Tool
    • Publication number 20130126202
    • Publication date May 23, 2013
    • Hitachi Koki Co., Ltd.
    • Katsuhiro Oomori
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS