| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b55c349b43c3ecba4977fd52cc8f8c67 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2325-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2325-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2325-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2325-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2327-18 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29C55-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J5-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-36
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-00 |
| filingDate |
2018-05-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_707a3119bb5395f8807abe9e807d51fb |
| publicationDate |
2020-04-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-3632971-A1 |
| titleOfInvention |
Polytetrafluoroethylene porous film |
| abstract |
A porous polytetrafluoroethylene membrane (20) of the present disclosure has an average pore diameter of 0.03 to 0.2 µm and a porosity of more than 25% and not more than 90%. The number of pores present in a region having a width of 23 µm and a thickness of 1 µm in a cross-section parallel to the thickness direction is in the range from 40 to 120. The porous polytetrafluoroethylene membrane (20) is made of polytetrafluoroethylene having a number-average molecular weight in the range from 2,000,000 to 12,000,000, and a puncture strength per unit thickness is in the range from 5.0 to 15 gf/µm. |
| priorityDate |
2017-05-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |