http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-2487304-A1
Outgoing Links
Predicate | Object |
---|---|
assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_df6e966900fb0361a4d7fa1584424c24 |
classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61K48-00 |
classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61K47-6927 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C12N15-88 |
classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K48-00 |
classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C12N15-88 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K47-48 |
filingDate | 2003-06-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_59acb8800f12644b23d864dd1bd1702d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_34a5ecc68d780482bd4c357a30b7819c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a0a0197b71333a0b67ae3f0ded0fa7dd |
publicationDate | 2003-12-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
publicationNumber | CA-2487304-A1 |
titleOfInvention | Materials and methods relating to polyions and substance delivery |
abstract | Materials and method are disclose for delivering a desired substance to a target site, using a layered carrier in which the carrier and the substance together form at least three layers which associate by ionic interaction at the first pH, where at least one layer comprises a charge switch material which comprises an ionisable group and which has a positive charge at a first pH and a charge which is less positive, neutral or negative at a second pH, at least one layer comprises a polyionic polymer which is negatively charged at the first pH and at least one layer comprises the desired substance. Preferred carriers are based on the charge switch material poly Bis-Tris and the polyionic polymer polyacrylic acid. |
priorityDate | 2002-05-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 1176.