Patents by Inventor Frederick Wai

Frederick Wai 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: 20050121863
    Abstract: A toy shopping cart has a basket and seat that may be used for different functions and which are easily removed from and reattached to a frame of the shopping cart. The frame of the toy shopping cart has a pair of leg assemblies with four wheels and a number of cross-members with a holding channel formed on one of the cross-members to removably support the basket by a rim and the seat by a holding member in position at the front and the rear of the frame. The basket includes a housing with a base that is supported by a second of the cross-members when held in the frame.
    Type: Application
    Filed: December 3, 2003
    Publication date: June 9, 2005
    Inventors: Elizabeth Libretti, Frederick Wai, Jon Marine