Pharmaceutical composition with gastric residence and controlled release
US6861072B1 · kind B1 · utility
22Cited by
3References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 12, 1999 |
| Grant date | Mar 1, 2005 |
| Priority date | — |
| Expiry date | Oct 12, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P31/04
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention concerns a pharmaceutical composition with gastric residence and controlled release, characterized in that it comprises two or three layers and contains (a) an active principle associated with a excipient modifying its release; (b) a system generating carbon dioxide in a swelling polymer hydrophilic matrix; (a) and (b) capable of being included in a common layer or in separate layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.