Liquid carbon dioxide botanical extraction system
US11224587B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 7, 2020 |
| Grant date | Jan 18, 2022 |
| Priority date | — |
| Expiry date | Jan 7, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D11/028
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A process for extracting a botanical organic compound from cannabis with subcritical liquid carbon dioxide includes providing a pressurizable extraction vessel. The cannabis is placed within the pressurizable extraction vessel, whereupon the extraction vessel is filled with liquid carbon dioxide under subcritical conditions. The cannabis is then allowed to be in contact with the subcritical liquid carbon dioxide for a selected period of time so as to extract at least a portion of the botanical organic compounds from the cannabis into the subcritical liquid carbon dioxide. The subcritical liquid carbon dioxide containing the botanical organic compound is then removed from the extraction vessel, and the liquid carbon dioxide is separated from the botanical organic compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.