Phospholipid composition and liposomes made therefrom
US5429823A · kind A · utility
6Cited by
15References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 9, 1994 |
| Grant date | Jul 4, 1995 |
| Priority date | — |
| Expiry date | Sep 9, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2984
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A composition having equal to or greater than about 97 percent by weight phosphatidylcholine and about equal to or less than about 3 percent by weight to about 0.5% sphingomylin and equal to or less than about 0.5% lysophosphatidylcholine (undetectable by UV at 205 nm) has been found to result in liposomes having improved stability. Methods for preparing the composition are disclosed whereby the phospholipids are extracted and then purified using silica chromatography.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.