Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing
Patent
1995-06-05
1998-12-22
Dye, Rena L.
Stock material or miscellaneous articles
Hollow or container type article
Polymer or resin containing
428 366, 428483, 428517, 428518, 428523, 206484, 2064842, 206807, 422 55, G01N 2100, B32B 2700
Patent
active
058516115
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.
REFERENCES:
patent: 3579624 (1971-05-01), Guttag
patent: 4098577 (1978-07-01), Halpern
patent: 4952426 (1990-08-01), Guttag
patent: 5120089 (1992-06-01), Guttag
patent: 5234732 (1993-08-01), Versic et al.
Dye Rena L.
Guttag Alvin
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