APPARATUS WITH TIMED COLOR CHANGE INDICATION

摘要

An apparatus with time controlled color change indication comprises an apparatus includes a disposable, limited or restricted use product and an oxygen sensing color changeable dye disposed on a portion of the apparatus, the dye being translucent or having a first color upon application and for a defined time thereafter and the dye changing color after exposure to oxygen for the defined time. For example, a packaging for containing a product for human consumption has a portion with a color changeable dye disposed thereon. The dye changes color after being exposed to oxygen for a controlled and predetermined period of time indicating that the product for human consumption should no longer be consume or has decreased in freshness, quality of taste or potency.

主权项

1. An apparatus with time controlled color change indication comprising:
a disposable, limited or restricted use product; an oxygen sensing color changeable dye, the dye being translucent or having a first color upon application and the dye changing color after exposure to a defined percentage of oxygen;wherein the dye indicates the condition of the disposable, limited or restricted use product.