| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1a258fbf53a4ae7f921767140d611c06 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F05C2201-046
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F05C2225-04 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F04B53-007
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F04B5-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F04B53-143
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F04B53-162
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F04B17-003 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F04B53-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F04B17-00 |
| filingDate |
2007-12-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2015-04-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_27978a3dfb923d3c5e0b41f80c672211
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_48bc09eac675b30820eca12bd3ff2adf
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_899f857c37eada0fdc7ae0c6e6bd2cc2
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3bdfa64cde73be1bc55129fe147cd68b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2afc148493ff68d4ef35b07fbdd8f817
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_732e32a8fe67bfb13c5fc79f1ca0d7df
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2bec19b99eb97fdd5bf0e5433d3dbbb3
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ce6bf96a8d19892a672a4928d23c7c02 |
| publicationDate |
2015-04-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-2674220-C |
| titleOfInvention |
Subsea chemical injection system and pumps therefor |
| abstract |
A high pressure pump for use in the injection of liquid chemicals into subsea oil or gas wells, and intended to be positioned in the subsea environment adjacent to the wellhead, comprises a piezoelectric actuator (19) for reciprocating a plunger (22) which acts to compress and expand the effective volume of a pumping chamber (29) having a valved inlet (15) connected to a source of the liquid and a valved outlet (16) to lead the liquid to the well. The device has a minimum of moving parts and in particular avoids the need for any rotating parts and attendant high performance bearings and seals. |
| priorityDate |
2007-01-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |