Color change sensor assembly and its transfer
JP2026508824APending Publication Date: 2026-03-13SHOCKWATCH INC D B A SPOTSEE
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Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-01-18
- Publication Date
- 2026-03-13
AI Technical Summary
Technical Problem
Existing temperature-sensitive products, such as vaccines, face challenges in indicating exposure to undesirable temperatures or elapsed time without complex and costly logistics, necessitating a reliable, easy-to-apply, and inexpensive indicator that can be activated at the point of use.
Method used
A color change sensor assembly using a gas layer with a higher gas concentration than the atmosphere, enclosed in an impermeable container, which activates upon exposure to ambient conditions, allowing for easy application and providing time-temperature indication.
Benefits of technology
Enables cost-effective, large-scale distribution and activation of temperature indicators without refrigeration, ensuring product safety and quality by indicating exposure history.
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Smart Images
Figure 2026508824000001_ABST
Abstract
This disclosure provides a color-changing sensor assembly that changes color in response to temperature or time after activation. The sensor assembly comprises an indicator that changes color based on the concentration of a gas. The assembly comprises a porous material containing the gas at a higher concentration than that found in the atmosphere and is configured to control the diffusion of the gas, such as carbon dioxide, to the color-changing indicator. The assembly is sealed in an impermeable container containing the high concentration of gas found in the porous material, thereby allowing the sensor assembly to be activated by removing it from the packaging, providing a time and temperature-sensitive indicator.
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