Patents by Inventor Liban Yusuf

Liban Yusuf 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: 20020084584
    Abstract: A lottery ticket having a play area covered by a scratch-off layer including a plurality of individual play regions each containing at least one of a prize supporting symbol, a prize defeating symbol or a directional symbol advising the player to proceed to another play region, wherein a prize is won if the player accumulates at least a minimum of prize supporting symbols before obtaining a preselected number of prize defeating symbols.
    Type: Application
    Filed: January 2, 2001
    Publication date: July 4, 2002
    Inventor: Liban Yusuf