Purification process
US9540416B2 · kind B2 · utility
1Cited by
2References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2013 |
| Grant date | Jan 10, 2017 |
| Priority date | — |
| Expiry date | Oct 25, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2236/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present disclosure concerns methods for producing purified saponins, such as QS-21, which reduces the number of necessary lyophilization cycles to one by a step of solvent exchange and optional subsequent exposure of the purified saponin product to at least one exposure to dry gas followed by exposure to a vacuum to further rid the purified saponin product of residual solvent molecules.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.