Liquid carbon dioxide botanical extraction system
US10265295B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2017 |
| Grant date | Apr 23, 2019 |
| Priority date | — |
| Expiry date | Sep 19, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D11/028
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A process is disclosed for extracting cannabinoids from plant materials. The process comprises providing a pressurizable extraction vessel having a rotatable drum with baffles, along with providing a solvent permeable filter bag. The plant material is placed within the filter bag, and the filter bag containing the plant material is placed within the extraction vessel. The extraction vessel is then filled with subcritical liquid carbon dioxide and rotated to so that the plant material is in contact with the liquid carbon dioxide. After a selected period of time, the liquid carbon dioxide solvent containing the cannabinoid extracted from the plant material is removed from the vessel, and sent to a separator. The separator separates the cannabinoid from the liquid carbon dioxide solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.