| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_985585e20c79b1369427ce14c9125d08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_45bbd49cf8739a4f4b1d32b822c654b2 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P40-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-62
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-61
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-03
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2002-72 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B14-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01F11-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2-045
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01F11-185
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B09B3-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01F11-184 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F11-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B2-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B32-942
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B2-10 |
| filingDate |
2012-03-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2015-07-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_beee822ac6f563fb6b860cb24cbb32c3 |
| publicationDate |
2015-07-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-9085466-B2 |
| titleOfInvention |
Method for producing precipitated calcium carbonate using fowl egg shells |
| abstract |
The present invention relates to a method for producing precipitated calcium carbonate using fowl egg shells such as chicken egg shells. More particularly, the method comprises: a heat treatment step of heating fowl egg shells; a grinding step of grinding calcium oxide generated in the heat treatment step; a dry-quenching step of feeding the ground calcium oxide into a thermo-hygrostat to convert the ground calcium oxide into dry calcium hydroxide powder; a carbonizing step of mixing the dry calcium hydroxide powder prepared in the dry-quenching step with an organic solvent and feeding carbon dioxide generated in the heat treatment step into the mixture; and a filtering and drying step of filtering and drying the calcium carbonate obtained in the carbonizing step. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2018148343-A1 |
| priorityDate |
2011-03-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |