| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7b1962bdeafe58e2f312c308fe511c31 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2103-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2103-22 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B40-0039
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B28-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-467
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B24-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B24-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B7-02 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-467
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B24-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B24-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B103-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B7-02 |
| filingDate |
2021-04-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2022-12-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_86de88671297751e8e30bbe626711a0f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2e8872cb43b2b9d547ea2e688d1f7ea5
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c1bb17f89b6e183d5423493578c3907d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2aab0501d60c366d9904e54f3df4e709 |
| publicationDate |
2022-12-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-11535557-B2 |
| titleOfInvention |
Lignosulfonate and hydrolyzed carbohydrate retarder additive for cement mixture |
| abstract |
A retarder mixture for oil and gas well cementing includes a lignosulfonate compound and at least one hydrolyzed carbohydrate. A method includes blending the retarder mixture and a cement precursor to form a cement precursor mixture and introducing water into the cement precursor mixture to form a cement mixture. The cement mixture is pumped down a well and cures to form a cement sheath containing the cement precursor and the retarder mixture. |
| priorityDate |
2021-04-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |