Patents by Inventor Norman H. Hellman

Norman H. Hellman 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: 6006448
    Abstract: A scuff type slipper is produced so economically that it may be disposable, yet it has excellent cushioning properties and a sole with sufficient stiffness that the heel end will not fold under when in use. The slipper is produced from third web cushioning material. This has two planar thermoplastic webs spaced apart from one another by a middle thermoplastic web in the form of a plurality of bubbles hermetically sealed to the outer webs, trapping gas in the bubbles for cushioning and imparting stiffness. A vamp portion is formed by folding over a strip of the material at the toe end and fusion bonding it along the sides to the sole of the slipper and then cutting the slipper from the strip.
    Type: Grant
    Filed: May 2, 1997
    Date of Patent: December 28, 1999
    Inventor: Norman H. Hellman