Controlled drug release system of retinoic acid
US6764698B1 · kind B1 · utility
37Cited by
3References
5Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Mar 28, 2001 |
| Grant date | Jul 20, 2004 |
| Priority date | — |
| Expiry date | Mar 28, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P35/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention relates to a controlled drug release system in which a certain ratio or retinoic acid is incorporated into a microsphere comprising biodegradable polymer and amphoteric block copolymer having both hydrophilic and hydrophobic groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.