| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c8a446972747c0ad2a07fcd3722a29cb |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B41-0099 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21C50-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21D9-06 |
| filingDate |
2002-07-22^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b5cdd12a68b8f8820e5f56d57a3eb8e7
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e10829900dc0f71cf8197593abe8309b |
| publicationDate |
2004-02-19^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-2004052392-A |
| titleOfInvention |
Methane gas sampling method |
| abstract |
An object of the present invention is to provide a methane gas sampling method capable of reliably sampling methane without changing the stable state of methane hydrate. A tunnel excavation step of excavating a tunnel (4, 6) from the ground (3) to a methane hydrate layer (5) using a pneumatic shield method (pneumatic shield S1 or S2), and a tunnel excavation ( A methane collection step of collecting the methane stored in the methane hydrate layer (5) via 4, 4). [Selection diagram] Fig. 1 |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-4581719-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2014006204-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2006045128-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2014006204-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2006214164-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-7157973-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2993000-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2019010908-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2006096779-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-4543232-B2 |
| priorityDate |
2002-07-22^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |