| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2446439b17f7720546ed7f320f8eb96c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_cf3f9c6c964950e4c258d25a822ef85e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_54ca7080e1b64771149ddc29222ecb30 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S977-775
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S977-896
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-64
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S977-844
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S977-843 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B7-006
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B7-008
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B82Y30-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B34-365
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B32-949 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B34-36
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B32-949
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B7-00 |
| filingDate |
2001-09-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f00ec9214659ac915d821d4eb9c70e7f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_22ea8890fa98c8328732c2e87a1f9123 |
| publicationDate |
2002-03-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-0224575-A1 |
| titleOfInvention |
Method of forming nanograin tungsten carbide and recycling tungsten carbide |
| abstract |
Tungsten carbide is formed from a tungsten material which is preferably tungsten carbide scrap. If scrap material is used, this is oxidized and acid leached to remove impurities and any binder material. This is then dissolved in a solution of sodium hydroxide and spray dried to form a precursor compound. A carbon compound such as citric acid can be added to the solution prior to spray drying to provide a carbon source for the tungsten carbide. The powder formed from the spray dried solution is calcined and carburized to form tungsten carbide. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102725429-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2011083376-A1 |
| priorityDate |
2000-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |