Dispensing device containing a hydrophobic medium
US5431921A · kind A · utility
783Cited by
18References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 12, 1993 |
| Grant date | Jul 11, 1995 |
| Priority date | — |
| Expiry date | Mar 12, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/0004
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A device for the controlled delivery of an insoluble or partially aqueous insoluble beneficial agent to an aqueous containing environment. The device comprises a shaped wall that surrounds and defines an internal reservoir. The wall is formed at least in part of a sintered polymer microporous membrane permeable to a beneficial agent-containing hydrophobic medium when the wall is present in the aqueous containing environment. The reservoir contains a mixture of a hydrophilic swellable composition and a beneficial agent-containing hydrophobic medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.