Osmotic capsule
US4627850A · kind A · utility
208Cited by
7References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 2, 1983 |
| Grant date | Dec 9, 1986 |
| Priority date | — |
| Expiry date | Nov 2, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31772
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An osmotic capsule is disclosed for delivering a beneficial agent formulation to an environment of use. The osmotic capsule comprises an outer semipermeable wall surrounding and laminating an inner capsule wall formed of a different polymeric composition than the outer wall. The walls define an interior space containing the beneficial agent formulation. A passageway through the walls connects the exterior of the osmotic capsule with the interior of the osmotic capsule.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.