| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8e0bf0928b608797b70bbc2b91c7e52e |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K2208-12 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-528
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B7-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-528 |
| filingDate |
2013-06-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f1257e3419e5e706bea4f8ac4abd2643
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6cc8a97d965a7b068c3491052d494130
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7aa62f9229719904311976a8eaa51f38 |
| publicationDate |
2014-01-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-2876254-A1 |
| titleOfInvention |
Biodegradable graft copolymer anti-accretion additive for water-based drilling fluids |
| abstract |
The use of gelatin-based copolymers containing at least one grafted side chain formed from ethylenically unsaturated compounds as an anti-accretion additive is proposed for water-based drilling fluids in the development, exploitation and completion of underground mineral oil and natural gas deposits and in deep wells. These copolymers are water-soluble and have good biodegradability. |
| priorityDate |
2012-07-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |