Methods for pre-charging carbon dioxide snow
US11193708B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2018 |
| Grant date | Dec 7, 2021 |
| Priority date | — |
| Expiry date | Feb 10, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25D2500/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Manual and automated methods of pre-charging an empty or partially empty insulated container with CO2 snow are provided. A first location such as a charging location charges CO2 liquid into a container to create a pre-charged container with CO2 snow. The charging location prepares the pre-charged container for delivery to a second location, either by itself, or through a third party. The second location may be a clinical site, which upon receipt of the pre-charged container, loads a perishable item such as a biological sample into the pre-charged container. A user receives the pre-charged container with perishable item and removes the perishable item from the pre-charger container for testing (e.g., biological testing). Depending on the level of depletion of the CO2 snow in the pre-charged container, the user returns the depleted container to the first location or the intermediate location.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.