| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_890cdbbdd212b055d92145e3e6f07066 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0009
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2201-0464
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2325-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2325-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2325-36
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02A50-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2323-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2323-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2323-02 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0088
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-68
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-003 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D67-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D69-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D69-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D69-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D69-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-68 |
| filingDate |
2015-08-25^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2022-05-24^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3ffdbe8fe8e23d96731db36bed2054de
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6fc59f3ba1fb68c1cc48ed226b1fc796
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3c75b155989dc4b446cf6d6d177ded44 |
| publicationDate |
2022-05-24^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-11338248-B2 |
| titleOfInvention |
Porous membrane |
| abstract |
The object of the present invention is to provide a porous membrane by which a useful component can be recovered while suppressing the clogging during filtration of a protein solution and from which only a small amount of an eluate is eluted even when an aqueous solution is filtered. n The present invention provides a porous membrane containing a hydrophobic polymer and a water-insoluble hydrophilic polymer, the porous membrane having a dense layer in the downstream portion of filtration in the membrane, having a gradient asymmetric structure in which the average pore diameter of fine pores increases from the downstream portion of filtration toward the upstream portion of filtration, and having a gradient index of the average pore diameter from the dense layer to the coarse layer of 0.5 to 12.0. |
| priorityDate |
2014-08-25^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |