| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d6402b23ab8782152be47b3996e48a4a |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2002-32 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B13-185
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G49-009
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G49-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B13-18 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G49-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B13-18 |
| filingDate |
1990-12-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4de135c21659201c0203358f29ed8ce8
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_59a0e781e25f7a1d8fc6e7d1803cfb86
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bc6e90cc28aaf8afd45965406299ad19
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0ba8b71ca88985ed3b12b1b9144255a3
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2c5696baff66eed3948d976cdc4b496c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f15498b31f6423c6e9e339d48a4b0746 |
| publicationDate |
1991-12-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0462344-A1 |
| titleOfInvention |
Method for producing composite oxides for use ad starting materials for ferrites |
| abstract |
A method for producing an oxide useful as a starting material for soft ferrites comprised mainly of iron, zinc and at least one metal selected from manganese, magnesium, nickel and copper is described. In the method, while chlorides of metals other than zinc are roasted for oxidation to produce a composite oxide, zinc oxide is added during the roasting. This method ensures addition of zinc oxide at high yield without use of zinc chloride having a high vapor pressure. The resultant oxide for ferrites has desired ratios of metal constituents and contains spinel ferrites which are intermediate products with zinc oxide being uniformly dispersed. The use of the starting oxide leads to omission of a calcination step and a powder mixing step in the production process of ferrites. Ferrites with good quality can be obtained by direct sintering. n An alternating method using zinc chloride instead of zinc oxide is also described which can provide an equipment oxide for ferrites. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2009130359-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1090884-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6630084-B1 |
| priorityDate |
1990-06-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |