Patents by Inventor Matthew Chak Ming Yum

Matthew Chak Ming Yum 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).

  • Progressive display card
    Publication number: 20040082259
    Abstract: This invention relates to a novelty item which may be used as an active greeting card or a promotional advertising display device. The card itself contains a number of display leafs which are progressively “turned” by pulling a pull tab in the card base. The pages may have a “pop-up” action device mounted between each pair of leafs to give a 3-D effect as the leafs are progressively turned.
    Type: Application
    Filed: October 11, 2002
    Publication date: April 29, 2004
    Inventor: Matthew Chak Ming Yum