| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_de7fdfe0c4870b5f86f0a4e2a60ddd54 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B82Y40-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-64
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2002-72
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2002-01 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G23-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B82Y30-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B22F9-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G25-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G23-006
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G23-047
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G19-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G1-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01F7-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01F17-235
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B13-145
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G9-02 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F7-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B5-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F17-235
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F11-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B13-32
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B13-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J19-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B13-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B35-626
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B22F9-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G25-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B22F9-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22F1-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G19-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G23-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G23-047
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G23-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G23-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22C1-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G9-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G1-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B02C19-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G99-00 |
| filingDate |
1999-05-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2009-09-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9a98bdfce0f604f8ed4bffc486f45711
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_59965ad20cfbbeaaba21340a98a12ff2 |
| publicationDate |
2009-09-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-2332013-C |
| titleOfInvention |
Process for the production of ultrafine powders |
| abstract |
A process for the production of ultrafine powders consisting of individual particles with sizes in the range of 1 nm to 200 nm, which is based on the mechanical milling of two or more non-reacting powders. The process includes subjecting a suitable precursor metal compound and a non-reactant diluent phased to mechanical milling which through the process of mechanical activation reduces the microstructure of the mixture of the form of nano-sized grains of the metal compound uniformly dispersed in the diluent phase. Heat treating the milled powder converts the nano-sized grains of the precursor metal compound into a desired metal oxide phase. Alternatively, the precursor metal compound may itself be an oxide phase which has the requisite milling properties to form nanograins when milled with a diluent. An ultrafine powder is produced by removing the diluent phase such that nano-sized grains of the desired metal oxide phase are left behind. The process facilitates a significant degree of control over the particle size and size distribution of the particles in the ultrafine powder by controlling the parameters of mechanical activation and heat treatment. |
| priorityDate |
1998-05-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |