| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a12b0be1b74901f556d1d1a9200529ce |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K2208-12 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F246-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-035 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F246-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-38
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-035 |
| filingDate |
2004-12-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_77059325be146ad5642144a6f2592e08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3249df3e00cd9000a8b2d561f9868aae
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d7b3dce56cb28c2c414409ce1ae2657b |
| publicationDate |
2006-08-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-1694727-A2 |
| titleOfInvention |
Zwitterionic polymers comprising betaine-type units and use of zwitterionic polymers in drilling fluids |
| abstract |
The invention relates to novel polymers comprising betaine-type units and to the use of zwitterionic polymers in drilling fluids, for example, as a clay swelling inhibitor and/or as an accretion-inhibiting agent and/or as a fluid-rheology-controlling agent and/or a filtrate-reducing agent and/or a lubricant. |
| priorityDate |
2003-12-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |