Patents by Inventor Sergio Hirmas

Sergio Hirmas 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).

  • Patent number: 5152025
    Abstract: A method and injection mold assembly for making open-heeled shoes as disclosed. A lasting string is wrap-stitched around the lower peripheral border of an upper having an open heel, and the wrap-stitching is reinforced. The upper is aligned upon a last and the lasting string is tightened such that the upper fits tightly on the last. Preferably, a teflon edge projects out from the last in a location corresponding to the superior edge of the sole in the open heeled area to protect against leakage during injection molding.
    Type: Grant
    Filed: May 18, 1989
    Date of Patent: October 6, 1992
    Inventor: Sergio Hirmas