Production of Δ 9 tetrahydrocannabinol
US7524881B2 · kind B2 · utility
25Cited by
1References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 3, 2003 |
| Grant date | Apr 28, 2009 |
| Priority date | — |
| Expiry date | Oct 14, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/255
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Δ9 THC acid is obtained from plant material and extracted into an aqueous solvent under conditions of pH control. The acid is converted to a salt and the salt extracted into a polar solvent, yielding acid of high purity. The Δ9 THC acid is then converted to Δ9 THC which is further purified and combined with a carrier for pharmaceutical use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.