{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-10504548","patent":{"patent_number":"US-10504548","title":"Iron-based oxide magnetic particle powder and method for producing iron-based oxide magnetic particle powder","assignee":null,"inventors":[],"filing_date":"2015-09-17T00:00:00.000Z","publication_date":"2019-12-10T00:00:00.000Z","cpc_codes":["G11B","G11B","G11B","B82Y","B82Y","B82Y"],"num_claims":17,"abstract":"An e-type iron-based oxide magnetic particle powder has narrow particle size distribution and has a low content of fine particles which do not contribute to magnetic recording characteristics. As a result, a narrow coercive force distribution is achieved and the powder is suitable for increasing recording density of a magnetic recording medium. The powder containing substituting metal elements can be obtained by: adding an alkali to an aqueous solution containing trivalent iron ions and ions of the metals for partially substituting Fe sites to neutralize the aqueous solution to a pH of 1.5 to 2.5; then adding a hydroxycarboxylic acid; further adding the alkali to neutralize the aqueous solution to a pH of 8.0 to 9.0; washing with water a precipitation of an iron oxyhydroxide containing the substituting metal elements produced; and coating the iron oxyhydroxide containing the substituting metal elements with a silicon oxide and heating the resultant."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Iron-based oxide magnetic particle powder and method for producing iron-based oxide magnetic particle powder","description":"An e-type iron-based oxide magnetic particle powder has narrow particle size distribution and has a low content of fine particles which do not contribute to magnetic recording characteristics. As a re","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-10504548","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-10504548","citation_suggestion":"Patentable. \"Iron-based oxide magnetic particle powder and method for producing iron-based oxide magnetic particle powder\" (US-10504548). https://patentable.app/patents/US-10504548","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-10504548","json":"https://patentable.app/api/llm-context/US-10504548","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T04:21:09.269Z"}