Patents by Inventor Ning C. Yang

Ning C. Yang 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).

  • Automatic timing device of sprinkling fish meal for fishpond
    Patent number: 5076215
    Abstract: An automatic feeding device for sprinkling fish meal into a fishpond uses a ship, which moves along a designed track, has a blower which sprinkles fish meal quantitatively into the fishpond.
    Type: Grant
    Filed: January 14, 1991
    Date of Patent: December 31, 1991
    Inventor: Ning C. Yang