Patents Assigned to Alvin Guttag
  • Multi-layered storage container
    Patent number: 5851611
    Abstract: One aspect of the present invention reveals a multi-layered storage container that changes color in response to acid gases. The storage container is comprised of at least one layer of a plastic and at least one layer of a gas-barrier polymer. Furthermore, the multi-layered storage container is provided with a color-changing indicator to show the presence of acidic gases. The other aspect of the present invention reveals a diaper which, as the result of chemical and/or electrical processes, can indicate when the diaper is wet.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: December 22, 1998
    Assignee: Alvin Guttag
    Inventor: Alvin Guttag