Patents by Inventor Chieh-Yih Wang

Chieh-Yih Wang 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).

  • Floatable firework device
    Patent number: 6561102
    Abstract: A floatable firework device includes a hollow base for fitting an explosive therein, a waterproof fuse, and a tubular buoyancy member sleeved fixedly around an upper portion of the base. The base has a center of gravity at a lower end portion thereof. As such, the firework device can float on a water surface, with a flame-spraying upper end slit in the base being disposed above the water surface.
    Type: Grant
    Filed: March 4, 2002
    Date of Patent: May 13, 2003
    Inventor: Chieh-Yih Wang