Preparation of a slow-release drug
US4808416A · kind A · utility
4Cited by
1References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1987 |
| Grant date | Feb 28, 1989 |
| Priority date | — |
| Expiry date | Jul 9, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K31/166
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention concerns the preparation of a slow-release drug characterized by the coating of a core comprising a therapeutically active principle by means of a substance which retards its release and by means of an additional layer consisting of an enteric substance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.