TREA

Zu-Shung Shu

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  • Ta Li City, TW
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Patents Grantslast 30 patents

  • Information Patent Grant

    Sleeve device for receiving bits
    • Patent number 10,307,896
    • Issue date Jun 4, 2019
    • Zu-Shung Shu
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Ratchet screwdriver
    • Patent number 8,720,307
    • Issue date May 13, 2014
    • Zu-Shung Shu
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Tool handle
    • Patent number D608178
    • Issue date Jan 19, 2010
    • Zu-Shung Shu
    • D08 - Tools and hardware
  • Information Patent Grant

    Quick switch hand tool
    • Patent number 7,424,837
    • Issue date Sep 16, 2008
    • Zu-Shung Shu
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Tool handle
    • Patent number D576467
    • Issue date Sep 9, 2008
    • Zu-Shung Shu
    • D08 - Tools and hardware
  • Information Patent Grant

    Tool joint
    • Patent number 7,195,247
    • Issue date Mar 27, 2007
    • Zu-Shung Shu
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Grant

    Bit-driving apparatus
    • Patent number 7,121,168
    • Issue date Oct 17, 2006
    • Zu-Shung Shu
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Selective one-way bit-driving apparatus
    • Patent number 6,976,409
    • Issue date Dec 20, 2005
    • Zu-Shung Shu
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Screwdriver handle
    • Patent number D442049
    • Issue date May 15, 2001
    • Zu-Shung Shu
    • D08 - Tools and hardware
  • Information Patent Grant

    Ratchet mechanism housing assembly for a ratchet screwdriver
    • Patent number 6,151,995
    • Issue date Nov 28, 2000
    • Zu-Shung Shu
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Ratchet screw driver
    • Patent number 5,339,711
    • Issue date Aug 23, 1994
    • Zu-Shung Shu
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS

Patents Applicationslast 30 patents

  • Information Patent Application

    Sleeve Device for Receiving Bits
    • Publication number 20180185995
    • Publication date Jul 5, 2018
    • Zu-Shung Shu
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Ratchet Screwdriver
    • Publication number 20120318104
    • Publication date Dec 20, 2012
    • Zu-Shung Shu
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Chuck
    • Publication number 20090008886
    • Publication date Jan 8, 2009
    • Zu-Shung Shu
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    FAST SWITCH HAND TOOL
    • Publication number 20080178717
    • Publication date Jul 31, 2008
    • Zu-Shung Shu
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Tool joint
    • Publication number 20060163823
    • Publication date Jul 27, 2006
    • Zu-Shung Shu
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Selective one-way bit-driving apparatus
    • Publication number 20050211027
    • Publication date Sep 29, 2005
    • Zu-Shung Shu
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Selective one-way bit-driving apparatus
    • Publication number 20050204869
    • Publication date Sep 22, 2005
    • Zu-Shung Shu
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS