http://rdf.ncbi.nlm.nih.gov/pubchem/patent/AR-002473-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_64d898bad1b0154b864d4027cdaf20af |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J4-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61K9-0004 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J4-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K9-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K9-52 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D61-02 |
| filingDate | 1996-06-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1998-03-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | AR-002473-A1 |
| titleOfInvention | OSMOTIC DEVICE FOR THE CONTROLLED RELEASE OF A BENEFICIAL AGENT TO A NONWATERY ENVIRONMENT. |
| abstract | An osmotic device that after absorption of water vapor, provides for the controlled release of a beneficial agent (37) in a non-aqueous environment. The device comprises a hydrophilic formulation (2) and a beneficial agent, surrounded by a wall (5). The wall is formed at least in part of a semi-permeable, hydrophobic, microporous membrane (1) having an average pore size of between about 0.1 µm and 30 µm. The pores are substantially filled with a gaseous phase. The hydrophobic membrane is permeable to water in the vapor phase and the hydrophobic membrane is impervious to an aqueous medium at a pressure of less than about 100 Pa. The beneficial agent is released, for example, by pumping. osmotic or osmotic burst by the absorption of sufficient water vapor in the hydrophilic formulation. The high flow rates of water intended with these hydrophobic vapor permeable membranes facilitate the delivery of large quantities of beneficial agents, without requiring large surface areas (quantities) of the hydrophobic microporous membrane. In addition, the use of water-permeable, hydrophobic microporous membranes allows osmotic devices to be used in environments that have limited water availability, such as air or land. |
| priorityDate | 1995-06-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
| Predicate | Subject |
|---|---|
| isDiscussedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/compound/CID962 http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID419512635 |
Total number of triples: 16.