Time-temperature indicating device
First Claim
1. A method of monitoring the time-temperature history of a perishable good, comprising:
- attaching and putting into operation a time-temperature indicator (TTI) device to the perishable good to be monitored, wherein said TTI device comprises—
(i) a substrate bearing a layer comprising at least one metal, and(ii) at least one second reactant being selected and configured so as to react with said layer comprising at least one metal in a manner that causes disintegration thereof at a rate that is temperature dependent or time-temperature dependent, thereby causing a change in a visual physical property of the TTI device as a result of the disintegration of the layer comprising at least one metal, which change is a function of the time-temperature history,allowing the perishable good with attached TTI device to proceed through distribution and/or storage; and
noting any change of the visual physical property of the TTI device, which change is a function of the time-temperature history of the perishable good since the TTI device has been put into operation.
2 Assignments
0 Petitions
Accused Products
Abstract
The present invention is generally in the field of measuring and indicating techniques and relates to a time-temperature indicating device and methods of manufacturing and reading this device. More specifically, the time-temperature indicator (TTI) device comprises at least one active reactant being at least a part of a component that is configured to be either an electrical component or transformable into an electrical component, said at least one active reactant being selected to be affectable by a chemical and/or physical reaction effecting a change in at least an electrical property of said electrical component at a rate that is time-temperature dependent.
303 Citations
24 Claims
-
1. A method of monitoring the time-temperature history of a perishable good, comprising:
-
attaching and putting into operation a time-temperature indicator (TTI) device to the perishable good to be monitored, wherein said TTI device comprises— (i) a substrate bearing a layer comprising at least one metal, and (ii) at least one second reactant being selected and configured so as to react with said layer comprising at least one metal in a manner that causes disintegration thereof at a rate that is temperature dependent or time-temperature dependent, thereby causing a change in a visual physical property of the TTI device as a result of the disintegration of the layer comprising at least one metal, which change is a function of the time-temperature history, allowing the perishable good with attached TTI device to proceed through distribution and/or storage; and noting any change of the visual physical property of the TTI device, which change is a function of the time-temperature history of the perishable good since the TTI device has been put into operation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A perishable good whose time-temperature history is in need of monitoring, comprising:
-
a perishable good; and attached to said perishable good, a time-temperature indicator (TTI) device comprising— (i) a substrate bearing a layer of comprising at least one metal; and (ii) at least one second reactant being selected and configured so as to react with said layer comprising at least one metal in a manner that causes disintegration thereof at a rate that is temperature dependent or time-temperature dependent, thereby causing a change in a visual physical property of the TTI device as a result of the disintegration of the layer comprising at least one metal, which change is a function of the time-temperature history. - View Dependent Claims (10, 11, 12, 13, 14)
-
-
15. A method of monitoring the time-temperature history of a perishable good, comprising:
-
attaching and putting into operation a time-temperature indicator (TTI) device to the perishable good to be monitored, wherein said TTI device comprises— (i) a substrate bearing a layer comprising at least one metal, and (ii) at least one second reactant being selected and configured so as to react with said layer comprising at least one metal in a manner that causes disintegration thereof at a rate that is temperature dependent or time-temperature dependent, thereby causing a change in a visual physical property of the TTI device as a result of the disintegration of the layer comprising at least one metal, which change is a function of the time-temperature history, and which change associated with the disintegration of the layer comprising at least one metal is the sole change in visual physical property during the operation of the TTI device; allowing the perishable good with attached TTI device to proceed through distribution and/or storage; and noting any change of the visual physical property of the TTI device, which change is a function of the time-temperature history of the perishable good since the TTI device has been put into operation. - View Dependent Claims (16, 17, 18, 19, 20)
-
-
21. A perishable good whose time-temperature history is in need of monitoring, comprising:
-
a perishable good; and attached to said perishable good, a time-temperature indicator (TTI) device comprising— (i) a substrate bearing a layer comprising at least one metal; and (ii) at least one second reactant being selected and configured so as to react with said layer comprising at least one metal in a manner that causes disintegration thereof at a rate that is temperature dependent or time-temperature dependent, thereby causing a change in a visual physical property of the TTI device as a result of the disintegration of the layer comprising at least one metal, which change associated with the disintegration of the layer comprising at least one metal is a function of the time-temperature history, and which disintegration of the layer comprising at least one metal is the sole manner of effecting a change in visual physical property during the operation of the TTI device. - View Dependent Claims (22, 23, 24)
-
Specification