Color changing device for time indicating label and methods of making and using the same

The present invention relates to the present invention relates to a time indicating label comprising (a) a label substrate having a first and second surface, (b) an acid-base indicator composition, and (c) an activator composition, wherein one of (b) or (c) are on the first surface of the substrate...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	Ko, Chan U, Lee, Eung, Banks, Donald E, Hodsdon, Jerry G, Ercillo, Jesse C
Format:	Patent
Sprache:	eng
Online-Zugang:	Volltext bestellen
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