| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b55c349b43c3ecba4977fd52cc8f8c67 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2325-24 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0027
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-36
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29C44-569
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D65-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29C44-5627 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D67-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D65-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D69-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-36
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C44-56 |
| filingDate |
2009-09-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_38748fc501c39c531e75ae67c54d2beb
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3042aea9938877db939162290f275dba |
| publicationDate |
2011-07-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-2343180-A1 |
| titleOfInvention |
Polytetrafluoroethylene porous membrane, method for producing same and waterproof air-permeable filter |
| abstract |
A first unsintered sheet made of PTFE having a standard specific gravity of 2.16 or more and a second unsintered sheet made of PTFE having a standard specific gravity of less than 2.16 are laminated, and a pressure is applied to a resulting laminated body so as to obtain a pressure-bonded article. The pressure-bonded article is stretched in a specified direction at a temperature lower than a melting point of PTFE, and then the pressure-bonded article is stretched further in the specified direction at a temperature equal to or higher than the melting point of PTFE or heated to a temperature equal to or higher than the melting point of PTFE. Thereafter, the pressure-bonded article stretched in the specified direction is stretched in a width direction perpendicular to the specified direction at a temperature lower than the melting point of PTFE. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-3357564-A4
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2730607-A4
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10765987-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2783844-A1 |
| priorityDate |
2008-11-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |