| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3b7934731dadac2543ffbf83f32e5fc9 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B34-36 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B34-36
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23F11-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B22F1-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B22F1-00 |
| filingDate |
2006-01-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2191f2c1e7deb188f129cc39295c3380
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_48ec39f23b0e1f192d7c7f59dd7707f4
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8f803e2b3dce1c8a62bcf3f766a8f531 |
| publicationDate |
2006-07-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-1683879-A2 |
| titleOfInvention |
Additives for suppressing tungsten leachability |
| abstract |
The leachability of tungsten in an aqueous medium may be suppressed by combining tungsten metal with a metal oxide or metal salt that will form an insoluble tungsten-containing compound when the mixture is brought into contact with an aqueous medium. The additive is preferably present in an amount from about 1 weight percent (wt.%) to about 10 weight percent of the tungsten. Preferred additives are lead oxide and calcium sulfate. The method can be used in processing tungsten powder to pressed powder compacts. |
| priorityDate |
2005-01-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |