Extended release dosage form
US8524277B2 · kind B2 · utility
11Cited by
62References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2007 |
| Grant date | Sep 3, 2013 |
| Priority date | — |
| Expiry date | Jun 17, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/2886
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A membrane system comprising an interior wall, a fluid-permeable exterior wall surrounding the interior wall and an internal compartment defined by the membrane system, wherein fluid permeability of the interior wall is responsive to osmolarity of an osmotic core within the internal compartment are disclosed. A controlled release dosage form comprising the membrane system and a process for delivering an osmotically active formulation from an osmotic pump over an extended period of time are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.