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US 2018/0356041 A1Published application
Thermochromic indicator for reagent gas vessel
AssigneeEntegris, Inc.
InventorsJoseph Despres, Edgar La Borde
Life of this patent
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Abstract
A dispensing and storage vessel for use in housing a gas such as toxic and hazardous gas in combination with a temperature sensitive label is described. Example dispensing and storage vessels include an adsorbent and a reagent gas within an internal volume of the vessel. A thermochromic label is adhered to the vessel and communicates temperature-sensitive information in a visual fashion to a user.
Claims12
A storage and dispensing vessel for storing and dispensing reagent gas, the vessel comprising:
- an interior volume,
- adsorbent within the interior volume,
- reagent gas within the interior volume, the reagent gas comprising a portion that is adsorbed on the adsorbent as adsorbed reagent gas, and a portion that is present as gaseous reagent gas in equilibrium with the adsorbed reagent gas,
- an exterior surface, and
- a reversible thermochromic indicator in thermal contact with the exterior surface, the thermochromic indicator reversibly indicating whether an interior pressure of the vessel is above a desired maximum pressure that is associated with a transition temperature.
2 more elements
Dependencies are inferred from the claim text.