Sustained release formulations
US4816264A · kind A · utility
69Cited by
9References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 6, 1986 |
| Grant date | Mar 28, 1989 |
| Priority date | — |
| Expiry date | Jun 6, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/2866
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Drug delivery systems which exhibit sustained release properties when administered are produced using a "dual control" system which employs polymeric agents in core and membrane portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.