Method of manufacturing porous matrix-type controlled release systems using emulsion technique
US6451348B1 · kind B1 · utility
6Cited by
7References
6Claims
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Key dates
| Filing date | Jan 3, 2000 |
| Grant date | Sep 17, 2002 |
| Priority date | — |
| Expiry date | Jan 3, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/7007
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A method of manufacturing a porous matrix-type drug delivery system is provided. It comprises the steps of: dispersing, stirring, and emulsifying an aqueous solution of a drug in an organic solvent having a polymer compound and a surface active agent solved therein; thereafter forming it into a desirable matrix shape; lyophilizing or drying it at a low temperature or room temperature until the matrix surface is hardened; and drying it again in order to remove the water and the organic solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.