TREA

Walley Chao

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  • Taichung, TW
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Patents Grantslast 30 patents

  • Information Patent Grant

    Folding hand saw
    • Patent number 8,079,148
    • Issue date Dec 20, 2011
    • K & W Tools Co., Ltd.
    • Walley Chao
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Hole saw
    • Patent number 8,079,787
    • Issue date Dec 20, 2011
    • K & W Tools Co., Ltd.
    • Walley Chao
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Collapsible handsaw frame
    • Patent number 7,644,501
    • Issue date Jan 12, 2010
    • Walley Chao
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Door lockset mounting tool
    • Patent number 7,530,770
    • Issue date May 12, 2009
    • Walley Chao
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Hole saw
    • Patent number 7,384,222
    • Issue date Jun 10, 2008
    • Walley Chao
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Connection device of boring saw
    • Patent number 6,357,973
    • Issue date Mar 19, 2002
    • Walley Chao
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

  • Information Patent Application

    FOLDING HAND SAW
    • Publication number 20090288302
    • Publication date Nov 26, 2009
    • K&W TOOLS CO., LTD
    • Walley CHAO
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    SAW BOW FOR HANDSAW
    • Publication number 20090265944
    • Publication date Oct 29, 2009
    • K & W Tools Co., LTD
    • Walley CHAO
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    HOLE SAW
    • Publication number 20090214310
    • Publication date Aug 27, 2009
    • K & W Tools Co., LTD
    • Walley CHAO
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    Collapsible handsaw frame
    • Publication number 20080115370
    • Publication date May 22, 2008
    • Walley Chao
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    Method of cutting off steel strip having welded rigid beads
    • Publication number 20070289423
    • Publication date Dec 20, 2007
    • Walley Chao
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    Hole saw
    • Publication number 20070258780
    • Publication date Nov 8, 2007
    • Walley Chao
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    Hole cutter having detachable hole-sawing blade
    • Publication number 20070160435
    • Publication date Jul 12, 2007
    • Walley Chao
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    Door lockset mounting tool
    • Publication number 20070110528
    • Publication date May 17, 2007
    • Walley Chao
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    Cutter having detachable cutter blade
    • Publication number 20070044323
    • Publication date Mar 1, 2007
    • Walley Chao
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING
  • Information Patent Application

    Saw blade
    • Publication number 20040182218
    • Publication date Sep 23, 2004
    • Walley Chao
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    Connection device of boring saw
    • Publication number 20010001276
    • Publication date May 17, 2001
    • Walley Chao
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC