Patents by Inventor Constantin Tzenos

Constantin Tzenos 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).

  • Stitch-down safety shoe
    Patent number: 6029373
    Abstract: The present invention is directed to a safety shoe having improved characteristics of flexibility, weight and style. The shoe, which is of stitch-down construction incorporates a metal toe box retainer which fits within the metal toe box and holds the metal toe box in place. The metal toe box has flanges which fit under the edges of the metal toe box retainer. Durability and comfort are achieved by means of a liner which is lasted to the interior surface of the metal toe box and wraps around and under the retainer.
    Type: Grant
    Filed: October 23, 1998
    Date of Patent: February 29, 2000
    Assignee: Gredico Footwear Ltd.
    Inventors: Richard G. Diradour, Constantin Tzenos