{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9595284","patent":{"patent_number":"US-9595284","title":"Glass substrate for magnetic disk and magnetic disk","assignee":null,"inventors":[],"filing_date":"2014-02-24T00:00:00.000Z","publication_date":"2017-03-14T00:00:00.000Z","cpc_codes":["G11B","G11B","G11B"],"num_claims":6,"abstract":"A magnetic-disk glass substrate has a circular hole at a center, and includes a pair of main surfaces and a side wall surface orthogonal to the main surfaces. A roundness of the circular hole is 1.5 μm or less. A difference between a maximum value and a minimum value of radii of three inscribed circles that are respectively derived from outlines in the circumferential direction at three positions spaced apart by 200 μm in a substrate thickness direction on the side wall surface of the circular hole is 3.5 μm or less."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Glass substrate for magnetic disk and magnetic disk","description":"A magnetic-disk glass substrate has a circular hole at a center, and includes a pair of main surfaces and a side wall surface orthogonal to the main surfaces. A roundness of the circular hole is 1.5 μ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9595284","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-9595284","citation_suggestion":"Patentable. \"Glass substrate for magnetic disk and magnetic disk\" (US-9595284). https://patentable.app/patents/US-9595284","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9595284","json":"https://patentable.app/api/llm-context/US-9595284","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T08:21:22.874Z"}