{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9607644","patent":{"patent_number":"US-9607644","title":"Perpendicular magnetic recording medium","assignee":null,"inventors":[],"filing_date":"2014-09-16T00:00:00.000Z","publication_date":"2017-03-28T00:00:00.000Z","cpc_codes":["G11B"],"num_claims":9,"abstract":"A magnetic recording medium having a thick magnetic recording layer of excellent magnetic characteristics is provided. The magnetic recording medium includes a non-magnetic substrate and a magnetic recording layer. The magnetic recording layer includes a plurality of first magnetic recording layers located at odd-numbered positions from the non-magnetic substrate, and one or more second magnetic recording layers located at even-numbered positions from the non-magnetic substrate. The first magnetic recording layers each have a granular structure that has first magnetic crystal grains with an ordered alloy and a first non-magnetic portion surrounding the first magnetic crystal grains and formed of a material having carbon as main component. The second magnetic recording layers each have a granular structure that has second magnetic crystal grains with an ordered alloy and a second non-magnetic portion surrounding the second magnetic crystal grains and formed of a material different from that of the first non-magnetic portion."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Perpendicular magnetic recording medium","description":"A magnetic recording medium having a thick magnetic recording layer of excellent magnetic characteristics is provided. The magnetic recording medium includes a non-magnetic substrate and a magnetic re","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9607644","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-9607644","citation_suggestion":"Patentable. \"Perpendicular magnetic recording medium\" (US-9607644). https://patentable.app/patents/US-9607644","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9607644","json":"https://patentable.app/api/llm-context/US-9607644","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T05:16:03.216Z"}