Patents by Inventor Joyce Maria Anna Wierda

Joyce Maria Anna Wierda 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).

  • SUB-ASSEMBLY FOR INCORPORATION INTO A SHOE HAVING AN ADJUSTABLE HEEL
    Publication number: 20100083537
    Abstract: A sub-assembly for incorporation into a shoe, in particular a ladies shoe, comprises a base having at least an arch portion and a heel portion, and a heel, which is adjustable between a first, relatively low position and a second, relatively high position. The heel is at least partially detachable from the base and, once at least partially detached, is freely rotatable or rotatable about a pivot that is movable with respect to the base.
    Type: Application
    Filed: April 14, 2008
    Publication date: April 8, 2010
    Applicant: JOY FOR EVER B.V.
    Inventors: Joyce Maria Anna Wierda, Eva Anna Theresia Willebrands