| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_05a203d85ee01909eaf728dc16f0f6cb |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-64
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-63
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-62
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-60 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09C1-346 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G37-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09C1-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09C1-34 |
| filingDate |
1982-06-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_217ba913c9952d576aafd9d0d2d9da47 |
| publicationDate |
1983-01-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0068787-A1 |
| titleOfInvention |
Preparation of pigment grade chromium oxide |
| abstract |
A process for the preparation of pigment grade chromium oxide comprising calcining non-pigment grade chromium oxide in the presence of at least about 1.0 weight percent sodium sulfate, washing the calcined mixture to remove the sodium sulfate and recovering the pigment grade oxide thus produced. |
| priorityDate |
1981-06-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |