Controlled release system and manufacturing method thereof
US8663677B2 · kind B2 · utility
14Cited by
2References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 12, 2011 |
| Grant date | Mar 4, 2014 |
| Priority date | — |
| Expiry date | Aug 12, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L2430/02
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A controlled release system and manufacturing method is provided. The method comprises providing a first aqueous solution containing a hydrophilic drug and an alkaline agent, providing an organic solution containing a hydrophobic molecule, providing a second aqueous solution containing a hydrophilic surfactant, mixing the first hydrophilic solution with the organic solution to form a first emulsion, and mixing the first emulsion with a second aqueous solution to form a second emulsion containing delayed-release microsphere.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.