Extracts of ginkgo biloba and their methods of preparation
US5700468A · kind A · utility
5Cited by
3References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 12, 1996 |
| Grant date | Dec 23, 1997 |
| Priority date | — |
| Expiry date | Mar 12, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K31/70
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A process is provided for producing a purified extract from Ginkgo biloba leaves by solvent extraction with selected solvents. In the process, a crude or partially purified extract is subjected to solvent extraction with a solvent comprising toluene and n-butanol. Pharmaceutical compositions comprising dimeric flavones and/or polyphenols are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.