| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5fb9798bf05293ffe6d2e0fde58c3cdb |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22C2202-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B22F2999-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B22F2998-10 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01F1-113
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B5-712
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01F1-112
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01F1-11
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22C33-0235
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B5-70642
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B22F9-22 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01F1-01
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B5-706 |
| filingDate |
2009-02-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_778c2b44728f4667efcf8f1b43a43fa5
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9fa1bd7d664961b6c26dcb747d074f69
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_adfa7ff427d41b40502dfebd268d0e7a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_736dd45cbfa666aa3fe4bcd152d494fd
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c43bee222b5f083bede5bececc790082 |
| publicationDate |
2009-08-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2009202867-A1 |
| titleOfInvention |
Process for producing magnetic metal particles for magnetic recording, and magnetic recording medium |
| abstract |
The present invention relates to a process for producing magnetic metal particles for magnetic recording, comprising:n heat-treating goethite particles having an aluminum content of 4 to 50 atom % in terms of Al based on whole Fe to obtain hematite particles; and heat-reducing the hematite particles at a temperature of 200 to 600° C., the goethite particles being obtained by adding a peroxodisulfate to a reaction solution comprising:n a ferrous salt aqueous solution and a mixed alkali aqueous solution comprising:n an alkali hydrogen carbonate aqueous solution or alkali carbonate aqueous solution and an alkali hydroxide aqueous solutionn nbefore initiation of an oxidation reaction of the reaction solution, and then conducting the oxidation reaction. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11305350-B2 |
| priorityDate |
2008-02-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |