Patents by Inventor Mark E. Wolpa

Mark E. Wolpa 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: 4167824
    Abstract: An inner sole insert is disclosed which comprises an open cell foam base capable of conforming to and substantially retaining the shape of compressive forces applied thereto, an elastic closed cell foam layer having a maximum compression set of less than 50% and a stretch fabric bonded to one face of the closed cell foam layer. The inner sole can be used in athletic shoes and other environments for substantially reducing blisters and callouses and can accommodate the individual foot by molding thereto.
    Type: Grant
    Filed: March 20, 1978
    Date of Patent: September 18, 1979
    Inventor: Mark E. Wolpa