Apparatus with timed color change indication
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.
1. An apparatus with time controlled color change indication comprising:
an apparatus that includes a disposable, limited or restricted use product;
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
wherein the dye comprises an oxygen scavenger.
2. An apparatus as recited in claim 1 wherein the dye comprises at least Methylene Blue, glucose, and sodium hydroxide.
3. An apparatus as recited in claim 1 wherein the dye comprises at least Safranine T, glucose and sodium hydroxide.
4. An apparatus as recited in claim 1 wherein the dye comprises at least Methylene Blue, glucose, sodium hydroxide, and Iron (II) carbonate.
5. An apparatus as recited in claim 1 wherein the dye comprises at least Safranine T, glucose, sodium hydroxide and Iron (II) carbonate.
6. An apparatus as recited in claim 1 wherein the dye comprises at least Methylene Blue and wax.
7. An apparatus as recited in claim 1 wherein the dye comprises at least Safranine T and wax.
8. An apparatus as recited in claim 1 wherein the dye comprises at least Methylene Blue, wax and Iron (II) carbonate.
9. An apparatus as recited in claim 1 wherein the dye comprises at least Safranine T, wax and Iron (II) carbonate.
10. An apparatus as recited in claim 1 wherein the dye comprises at least glucose, sodium hydroxide, Methylene Blue or Safranine T, and methyl cellulose or acacia gum.
11. An apparatus as recited in claim 1 wherein the dye further includes wax and Iron (II) carbonate.
12. An apparatus as recited in claim 1 wherein the dye further includes wax.
13. An apparatus as recited in claim 1 wherein the dye further includes Iron (II) carbonate.
14. An apparatus as recited in claim 1 wherein the dye is printed on the limited use apparatus.
15. An apparatus as recited in claim 14 wherein the disposable, limited or restricted use apparatus is a medical device.
16. An apparatus as recited in claim 15 wherein the medical device is a scalpel.
17. An apparatus as recited in claim 15 wherein the medical device is a syringe.
18. An apparatus as recited in claim 15 wherein the medical device is an ophthalmic lens.
19. An apparatus as recited in claim 1 wherein said apparatus is a packaging for a product for human consumption.
20. An apparatus of claim 19 wherein the dye disposed on a portion of the packaging.
21. A packaging as recited in claim 19 wherein the dye is disposed on an interior of the packaging and is visible from an exterior of the packaging.
22. An apparatus as recited in claim 19 wherein the product for human consumption decreases in freshness, quality of taste or potency after exposure to oxygen for a period of time.
23. An apparatus as recited in claim 22 wherein the defined time after which the dye changes color is approximately equal to the period of time after which the product for human consumption decreases in freshness, quality of taste or potency.
24. An apparatus as recited in claim 19 wherein the dye changing color occurs after exposure to a defined percentage of oxygen for the defined period of time.
25. An apparatus with time controlled color change indication comprising:
an apparatus that includes a disposable, limited or restricted use product;
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 a defined percentage of oxygen for the defined period of time; and
a second 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 second defined time thereafter and the dye changing color after exposure to a second defined percentage of oxygen for the second defined time.
26. An apparatus as recited in claim 25 further comprising at least one other 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 at least one other defined time thereafter and the dye changing color after exposure to at least one other defined percentage of oxygen for the at least one other defined time.
27. An apparatus as recited in claim 26 wherein said first dye changes color after exposure to approximately 5% oxygen for approximately 1 minute, said second dye changes color after exposure to approximately 10 to 15% oxygen for approximately 1 minute and said other dye changes color after exposure to approximately 20% oxygen for approximately 1 minute.
28. An apparatus as recited in claim 26 wherein said first dye changes color after exposure to approximately 5% oxygen for approximately 1 minute, said second dye changes color after exposure to approximately 10 to 15% oxygen for approximately 10 minutes and said other dye changes color after exposure to approximately 20% oxygen for approximately 1 hour.
29. An apparatus as recited in claim 26 wherein said first dye changes color after exposure to approximately 5% oxygen for approximately 10 minutes, said second dye changes color after exposure to approximately 10 to 15% oxygen for approximately 10 minutes and said other dye changes color after exposure to approximately 20% oxygen for approximately 10 minutes.
30. An apparatus as recited in claim 26 wherein said first dye changes color after exposure to approximately 5% oxygen for approximately 1 hour, said second dye changes color after exposure to approximately 10 to 15% oxygen for approximately 10 minutes and said other dye changes color after exposure to approximately 20% oxygen for approximately 1 minute.
31. An apparatus as recited in claim 28 wherein the product for human consumption has an oxygen sensing color changeable dye disposed thereon, 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 atmospheric oxygen for the defined time.
32. An apparatus as recited in claim 1 wherein said dye is disposed upon a product for human consumption.
33. An apparatus as recited in claim 32 wherein said product for human consumption is a pill.
34. An apparatus as recited in claim 32 wherein the product for human consumption decreases in freshness, quality of taste or potency after exposure to oxygen for a period of time.
35. An apparatus as recited in claim 34 wherein the defined time after which the dye changes color is approximately equal to the period of time after which the product for human consumption decreases in freshness, quality of taste or potency.
36. An apparatus as recited in claim 32 wherein dye changing color after exposure to a defined percentage of oxygen for the defined period of time.
37. An apparatus as recited in claim 33 wherein said dye changes after exposure to approximately 20% oxygen.