| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_bce1ecc7963cd87cd2786475ee9a08ec |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2323-38 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-68
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N33-545
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N33-54386
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N27-44717
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0093 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-68
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L71-03
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L71-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D67-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N33-543
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C12Q1-68
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N27-447
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07K1-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L71-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C12N15-09
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N33-545
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C12Q1-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-38
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-52 |
| filingDate |
1991-09-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1999-12-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9a4a1cf355cf42df83fd278e80177eb4
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_350f5b47efa7881680a109373c59e91d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6211783e0b08a45054444ac8b3217114
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_98b92f4bf8aa6653e8b59dd8027dfa09 |
| publicationDate |
1999-12-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-2092708-C |
| titleOfInvention |
Cationic charge modified microporous membranes |
| abstract |
Cationic charged semihydrophobic polyethersulfone (CSHP) membranes having hydrophilic and semihydrophobic properties are provided, as wall as preparation of the same by post-treatment. Typically, as an illustration, a microporus hydrophilic polyethersulfone membrane substrate which contains non-teachable polymeric additive having functional groups is treated in an alkaline solution for simultaneous or sequential reaction with 1) a primary charge modifying agent which is an epichlorohydrin modified polyamine, and 2) a secondary polymeric charge modifying agent containing a positive charge (or for reaction with the primary charge modifying agent alone); then baked until cured at elevated temperature; and finally washed and dried. The CSHP membranes are used in various applications such as the filtration of fluids and the macromolecular transfer of biomolecules either from electrophoresis gels or directly to immobilization on the membrane for hybridization and stripping. The CSHP membranes - unlike conventional charged membranes which typically show a decrease in sensitivity and reprobing performance - retain their sensitivity and reprobing performance and excel in this regard throughout multiple reprobing cycles. |
| priorityDate |
1990-09-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |