Process for preparing a watersoluble composition containing ginkgo leaf extracts
US5128131A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 2, 1989 |
| Grant date | Jul 7, 1992 |
| Priority date | — |
| Expiry date | Nov 2, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K47/14
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A composition containing an extract obtained by a water-containing organic solvent, comprising: (a) an extract containing active ingredients including flavone glycoside or biflavone almost insoluble in water, said extract being obtained for ginkgo plant tissues by extraction with a water-containing organic solvent, and at least one of (b) a water-soluble high-molecular substance and (c) a fatty acid ester of polyglycerol. This composition can be formulated into preparations not containing ethanol, i.e. solid preparations including tablets, granules, and powder preparations, or non-alcoholic liquid preparations such as drinkable preparations and syrups, in such a way that the extract contained is well absorbed through the digestive tract.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.