| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c1755eede76ea7e719a3e0d2843cd793 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2201-026
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2323-14 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-0023
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-0028
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01L1-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J5-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01G7-023
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01G7-02 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01L1-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01L1-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01G7-02 |
| filingDate |
2015-03-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2017-11-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5c02554ea386955941e67352730d0ee4
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e55698f77e9de1a3261e4fafd3230582
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a2c214dc2da1fa2db4102d11cb2224a4 |
| publicationDate |
2017-11-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-9831040-B2 |
| titleOfInvention |
Electret sheet and piezoelectric sensor |
| abstract |
The present invention provides an electret sheet which can maintain a high generated voltage even if a large amount of pressure has been applied. Disclosed is an electret sheet of the present invention including an electrically charged propylene-based resin foam sheet which contains a crosslinked propylene-based resin that includes a propylene-α-olefin random copolymer having a weight average molecular weight of 370,000 to 420,000 at a proportion of 60% by weight or more, and has a gel fraction of 30% to 50% by weight, and in which the average thickness is 90 to 150 μm, and the average number of foam cells in the thickness direction is 2 to 4 cells. |
| priorityDate |
2014-03-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |