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Shan-Wen Chang

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  • Taipei, TW
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Patents Grantslast 30 patents

  • Information Patent Grant

    Measuring rod for electric meter and electric meter assembly using...
    • Patent number 11,307,224
    • Issue date Apr 19, 2022
    • APPA Technology Corp.
    • Shan-Wen Chang
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Hooking-type electric meter
    • Patent number D628918
    • Issue date Dec 14, 2010
    • Appa Technology Corp.
    • Shan-Wen Chang
    • D10 - Measuring, testing, or signalling instruments
  • Information Patent Grant

    Electric meter (I)
    • Patent number D601047
    • Issue date Sep 29, 2009
    • Appa Technology Corp.
    • Shan-Wen Chang
    • D10 - Measuring, testing, or signalling instruments
  • Information Patent Grant

    Electric meter (II)
    • Patent number D585315
    • Issue date Jan 27, 2009
    • Appa Technology Corp.
    • Shan-Wen Chang
    • D10 - Measuring, testing, or signalling instruments
  • Information Patent Grant

    Electric meter (III)
    • Patent number D585316
    • Issue date Jan 27, 2009
    • Appa Technology Corp.
    • Shan-Wen Chang
    • D10 - Measuring, testing, or signalling instruments
  • Information Patent Grant

    Clamp multimeter
    • Patent number D517434
    • Issue date Mar 21, 2006
    • Appa Technology Corp.
    • Shan-Wen Chang
    • D10 - Measuring, testing, or signalling instruments
  • Information Patent Grant

    Clamp multimeter
    • Patent number D515953
    • Issue date Feb 28, 2006
    • Appa Technology Corp.
    • Shan-Wen Chang
    • D10 - Measuring, testing, or signalling instruments
  • Information Patent Grant

    Multimeter
    • Patent number D515952
    • Issue date Feb 28, 2006
    • Appa Technology Corp.
    • Shan-Wen Chang
    • D10 - Measuring, testing, or signalling instruments
  • Information Patent Grant

    Hooking-type fully automatic electric meter
    • Patent number 6,646,562
    • Issue date Nov 11, 2003
    • Appa Technology Corp.
    • Shan-Wen Chang
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Electrical multimeter
    • Patent number D472828
    • Issue date Apr 8, 2003
    • Appa Technology Corp.
    • Shan-Wen Chang
    • D10 - Measuring, testing, or signalling instruments
  • Information Patent Grant

    Clamp type electrical multimeter (I)
    • Patent number D472829
    • Issue date Apr 8, 2003
    • Appa Technology Corp.
    • Shan-Wen Chang
    • D10 - Measuring, testing, or signalling instruments
  • Information Patent Grant

    Clamp type electrical multimeter (II)
    • Patent number D472830
    • Issue date Apr 8, 2003
    • Appa Technology Corp.
    • Shan-Wen Chang
    • D10 - Measuring, testing, or signalling instruments

Patents Applicationslast 30 patents