Patents by Inventor Tadeusz Kostanecki

Tadeusz Kostanecki 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).

  • Tamper resistant security package
    Patent number: 4457430
    Abstract: A tamper-resistant package for an article to which access is intended only by destruction of the package has two webs of sheet material having inner surfaces securable together around their peripheries to form the package with the article lying between the webs. A solvent indicator ink is printed on one of the webs, the solvent indicator ink containing an organic dye which bleeds to a visible part of the package upon application of a readily-available common polar or non-polar solvent. A water-sensitive coating is provided on one of the webs to produce a visible indication if an attempt is made to open the package with water, and a heat-sensitive ink is printed on one of the webs to produce a visible change when an attempt is made to open the package by the use of heat.
    Type: Grant
    Filed: June 13, 1983
    Date of Patent: July 3, 1984
    Assignee: DRG Inc.
    Inventors: Stewart A. Darling, Tadeusz Kostanecki, George Soos