Prolonged release pharmaceutical preparations
US4221778A · kind A · utility
194Cited by
6References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 8, 1979 |
| Grant date | Sep 9, 1980 |
| Priority date | — |
| Expiry date | Jan 8, 1999 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K47/585
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Prolonged release pharmaceutical preparations containing ion exchange resin drug complexes at least a substantial portion of which have been treated with a solvating agent and provided with a diffusion barrier coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.