Process for purification and separation of cannabinoids, from dried hemp and cannabis leaves
US10189762B1 · kind B1 · utility
19Cited by
2References
12Claims
0Family size
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Key dates
| Filing date | Jul 7, 2017 |
| Grant date | Jan 29, 2019 |
| Priority date | — |
| Expiry date | Jul 7, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/16
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed is a method for purification and separation of cannabinoids, specifically cannabidiol and tetrahydrocannabinol, from the dried hemp and cannabis leaves using a combination of a sequence of purification steps including: filtration, decolorization, activation or decarboxylation, dewaxing, a continuous simulated moving bed process, polishing, and crystallization to separate cannabinoids from tetrahydrocannabinol and to provide phytocannabinoid rich oil and cannabidiol isolate. The cannabinoid products can be used in various pharmaceutical and nutraceutical applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.