| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ffa2cfbbaa8704d85ada389e151a7665 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-80
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-90 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09C1-021
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09C1-024
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H17-675 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21H17-67
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F11-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09C1-02 |
| filingDate |
1996-08-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a2aa3c4d75c7e6185fd2e7310f3677ea |
| publicationDate |
1997-03-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-2230054-A1 |
| titleOfInvention |
Surface modified calcium carbonate composition and uses therefor |
| abstract |
An improved form of calcium carbonate which is acid resistant to enable its use as a filler material in the making of neutral to weakly acid paper, and a process for producing this acid-resistant calcium carbonate is provided. This acid-resistant calcium carbonate comprises calcium carbonate in admixture with at least about 0.5 to about 10 percent, based on the dry weight of the calcium carbonate, of a cationic salt, together with at least about 0.5 to about 10 percent, based on the dry weight of the calcium carbonate, of an anionic salt. |
| priorityDate |
1995-08-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |