{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8512884","patent":{"patent_number":"US-8512884","title":"Perpendicular magnetic recording medium, method for producing the same, and magnetic recording/reproducing device","assignee":null,"inventors":[],"filing_date":"2008-08-28T00:00:00.000Z","publication_date":"2013-08-20T00:00:00.000Z","cpc_codes":["G11B","G11B","G11B","G11B"],"num_claims":6,"abstract":"A perpendicular magnetic recording medium including at least a soft under layer, an orientation control layer, a magnetic recording layer and a protective layer on a non-magnetic substrate, wherein the orientation control layer is composed of three or more layers including a seed layer, a first intermediate layer and a second intermediate layer sequentially, formed in that order from the substrate side, the crystal grains that constitute the first intermediate layer are epitaxially grown on the crystal grains of the seed layer, the crystal grains that constitute the second intermediate layer are epitaxially grown on the crystal grains of the first intermediate layer, and the crystal grains that constitute the second intermediate layer are finer than the crystal grains that constitute the first intermediate layer."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Perpendicular magnetic recording medium, method for producing the same, and magnetic recording/reproducing device","description":"A perpendicular magnetic recording medium including at least a soft under layer, an orientation control layer, a magnetic recording layer and a protective layer on a non-magnetic substrate, wherein th","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8512884","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-8512884","citation_suggestion":"Patentable. \"Perpendicular magnetic recording medium, method for producing the same, and magnetic recording/reproducing device\" (US-8512884). https://patentable.app/patents/US-8512884","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8512884","json":"https://patentable.app/api/llm-context/US-8512884","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T17:21:45.195Z"}