http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-3485618-D1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_571b8abacacea64d3f7089d0983b8b3b |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61K31-135 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61K9-5078 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61K9-2866 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61K9-2813 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61K9-2826 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61K9-282 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A01N25-26 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K9-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K9-50 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K9-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K31-135 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A01N25-26 |
| filingDate | 1984-08-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1992-04-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e98ab7a3737aef4203c2a9c6e75f48cd http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_84c42cd50ebbadfc52c547dac42f79cd http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c5e47db8c6575852810382355e80b15f |
| publicationDate | 1992-04-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-3485618-D1 |
| titleOfInvention | COMPOSITION FOR THE CONTROLLED DELIVERY OF AN ACTIVE SUBSTANCE AND THEIR PRODUCTION. |
| abstract | A compsn. for use in an aqs. environment comprises (a) a formulation contg. a water-soluble active ingredient (I), (b) a semipermeable membrane (II) surrounding the formulation and (c) particulate water-soluble pore-forming material (III) dispersed within the membrane. In use in an aqs. environment, (III) is dissolved forming pores in (II), (I) is taken up in soln. thus creating an asmotic pressure gradient across the membrane between the soln. and the aqs. environment, and water from the aqs. environment is diffused through (II) into contact with (I) concurrently while a soln. of (I) is discharged through the pores of the membrane into the aqs. environment. Pref. the formulation is in the form of a prill seed having a coating of a water-permeable polymer e.g. cellulose acetate. (II) is pref. made from a cellulose ester, a cellulose ether, nylon, a polycarbonate, a poly(dialkylsiloxane), a poly(methacrylic acid)ester, a poly(acrylic acid) ester, a poly(phenylene oxide), a poly(vinyl alcohol), an aromatic N-contg. polymer, a polymeric epoxide or regenerated cellulose (III) is e.g. a water-soluble sugar or a salt. |
| priorityDate | 1984-08-17-04:00^^<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: 26.