| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_129e393582e6bdf4029baf2206522f45 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2323-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2325-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2325-30 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D63-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-125
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-10 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D63-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D69-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D69-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-56 |
| filingDate |
2018-11-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f1ff7ba176ce9dd53e92787da27f51fe
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b5dcc4856649a518ef2504129187026e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7c2777ca95f40a0fad99d2f64e112425
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_944afa8f8a63a5bbd17a9f7a4fe557c7 |
| publicationDate |
2019-03-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2019070569-A1 |
| titleOfInvention |
Composite semipermeable membrane, composite semipermeable membrane element, and method of manufacturing composite semipermeable membrane |
| abstract |
A method of producing a composite semipermeable membrane includes forming a porous support by applying polymer solution forming a first layer and polymer solution forming a second layer on a substrate; immersing the substrate in a non-solvent; and forming a separation functional layer the porous support membrane using an aqueous solution containing polyfunctional amine and an organic solvent solution containing a polyfunctional acid halide; wherein the first layer is formed to contact the substrate; the second layer is formed to contact the separation functional layer; the polymer solutions contain polysulfone; the concentration of polysulfone in a polymer solution A is 12% or more and 18% or less by weight; the concentration of polysulfone in a polymer solution B is 14% or more and 25% by weight or less; and the polysulfone concentration of the polymer solution B is greater than the polymer concentration of the polymer solution A. |
| priorityDate |
2011-04-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |