Patents Assigned to Joy Research Incorporated
  • Patent number: 4436203
    Abstract: An inner enclosure of a predetermined size, design and construction loaded with a product and pressurized with a flowable material before said inner enclosure is closed, said inner enclosure is enclosed within a flexible outer enclosure, and said outer enclosure is closed after its internal pressure is reduced below that of the surrounding atmospheric pressure. In the event the product is tampered with through apertures in the walls of the package, the package will manifest evidence which will alert the consumer of the possibility that the product may have been tampered with.
    Type: Grant
    Filed: May 10, 1983
    Date of Patent: March 13, 1984
    Assignee: Joy Research Incorporated
    Inventor: Ellis M. Reyner