Patents by Inventor Chao-Hsi Wu

Chao-Hsi Wu 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: 20040228549
    Abstract: A packaging for food in accordance with the present invention has a packaging material, two perforated lines and a pull tab. The packaging material is formed into a bag with one sealed end. The two perforated lines are formed parallel around the bag. The pull tab is attached inside the bag between the two perforated lines and has at least has one loose end extending outside the bag. Pulling the loose end tears the perforated lines, which divides the bag into two pieces. One piece of the bag is removed to conveniently open the bag.
    Type: Application
    Filed: May 13, 2003
    Publication date: November 18, 2004
    Inventor: Chao-Hsi Wu