Patents by Inventor Henriette Wendelien Prent-de Jong

Henriette Wendelien Prent-de Jong 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).

  • Children's chair
    Patent number: D577209
    Type: Grant
    Filed: July 12, 2007
    Date of Patent: September 23, 2008
    Assignee: JET4kids V.o.f.
    Inventors: Henriette Wendelien Prent-de Jong, Marjet van Zanden