Aqueous dispersions of lipid spheres and compositions containing the same
US4772471A · kind A · utility
101Cited by
5References
11Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 12, 1979 |
| Grant date | Sep 20, 1988 |
| Priority date | — |
| Expiry date | Dec 12, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2985
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A dispersion in a continuous phase or spherules comprises arranged molecular layers of a non-ionic lipid compound encapsulating an aqueous phase wherein the non-ionic lipid compound has a lipophile group/hydrophile group ratio such that the non-ionic lipid compound swells in the aqueous phase to be encapsulated therein so as to form a lamellar phase. The hydrophile group of the non-ionic compound is selected from the group consisting of polyoxyethylene groups, polyglycerol groups and esters of polyols. The spherules have a diameter between 1,000 .ANG. and 50,000 .ANG..
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.