Stable coated microcapsules
US7097868B2 · kind B2 · utility
3Cited by
8References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 23, 2001 |
| Grant date | Aug 29, 2006 |
| Priority date | — |
| Expiry date | Aug 11, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/2081
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A microencapsulated composition containing lipophilic compounds is prepared by reducing the particle size of the lipophilic compound in the presence of a surface active agent to form a first solution; preparing a solution of alkali metal alginate to form a second solution; combining the first and second solutions to form a third solution; adding the third solution dropwise to a fourth solution containing calcium ion, obtaining beadlets, and removing the formed beadlets from the fourth solution; rinsing the beadlets with an acidic solution and drying the beadlets; and coating the beadlets to obtain microcapsules.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.