Patents by Inventor Christina Shu-Ming Yang

Christina Shu-Ming Yang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20090101391
    Abstract: A circuit board having barcode and fabrication method thereof are disclosed. The method of the present invention includes the steps of providing a substrate body that has an insulation layer covered with a copper foil; forming a dry film on the copper foil; disposing a film having a circuit pattern and a barcode pattern on the dry film and performing an exposure process so as to harden portions of the dry film at positions corresponding to the circuit pattern and the barcode pattern; performing a development process such that non-hardened portions of the dry film are removed and portions of the dry film that are hardened are remained as an etch mask; and performing an etch process so as to remove portions of the copper foil that are exposed from the dry film. Thus, circuit and barcode are formed in the copper foil at the same time, thereby saving cost and eliminating time for manually attaching barcode.
    Type: Application
    Filed: December 6, 2007
    Publication date: April 23, 2009
    Applicant: Inventec Corporation
    Inventors: Christina Shu-Ming Yang, Feng Hu