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US 2024/0253387 A1Published application
Environmental history monitor with security features
AssigneeTemptime Corporation
InventorsMarielle K. SMITH, Mohannad ABDO, Thi N. DO, Brian S. HUFFMAN
Life of this patent
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Abstract
Environmental monitors for monitoring a predetermined environmental exposure, for example, an historical heat exposure such as a cumulative ambient heat exposure and/or a peak ambient heat exposure may include an environmental indicator material and a security material. The environmental monitor may be configured to attach to a host product for monitoring the predetermined environmental exposure of the host product, and additionally serve as an anti-counterfeiting indicator.
Claims2
An environmental monitor, comprising:
- a substrate;
- an environmental indicator material supported by the substrate and configured to change its color state responsive to a predetermined environmental exposure other than light exposure;
- and
- a security material supported by the substrate, the security material being either a photochromic material configured to change its color state when exposed to specific light wavelengths or a luminescent material configured to give a bright appearance of a predetermined color when exposed to the specific light wavelengths.
1 more element
-52. (canceled)
Dependencies are inferred from the claim text.