Patents by Inventor Richard I. Polisner

Richard I. Polisner 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).

  • Protective insole insert for footwear
    Patent number: 6178664
    Abstract: A puncture proof insole insert formed of multiple layers of flexible metal sheets, the insert being capable of stopping penetration by a sharp object at forces up to 60 foot pounds in the ball area of the foot and up to 80 foot pounds in the heel area of the foot, there being a greater number of metal sheets in the heel area than in the ball area. The device may further incorporate cushioning or fabric layers, and may be formed with a raised arch or other orthotic shape. The device is preferably constructed of layers of 17-7 stainless steel with each layer having a thickness of 0.015 inches.
    Type: Grant
    Filed: August 31, 1999
    Date of Patent: January 30, 2001
    Inventors: Robert D. Yant, Richard I. Polisner