Patents by Inventor Wallace W. K. Leung

Wallace W. K. Leung 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).

  • Novelty drinking straw
    Patent number: 6129292
    Abstract: A novelty drinking straw designed to play an electronically recorded voice or other sound when a liquid passes through the straw is disclosed having improved safety and entertainment value. The novelty drinking straw has a detachable sound module and an improved sealing member to prevent damage to the electronic circuitry in the sound module.
    Type: Grant
    Filed: October 1, 1999
    Date of Patent: October 10, 2000
    Assignee: Simon Marketing, Inc.
    Inventors: Wallace W. K. Leung, Michael W. K. Keung