{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9637405","patent":{"patent_number":"US-9637405","title":"Evaluation method of suitable silica powder in manufacturing vitreous silica crucible for pulling of silicon single crystal","assignee":null,"inventors":[],"filing_date":"2013-06-30T00:00:00.000Z","publication_date":"2017-05-02T00:00:00.000Z","cpc_codes":["G01N","G01N","G01N","G01N","G01N"],"num_claims":8,"abstract":"An evaluation method of suitable silica powder for forming a bubble-free layer of a vitreous silica crucible for pulling of a silicon single crystal, includes: a process of measuring a porosity between silica particles in the silica powder, a process of melting the silica powder, a process of measuring a bubble content rate of a vitreous silica block obtained by cooling to harden the melted silica powder, and a process of determining whether the silica powder is suitable from the porosity of the silica powder and the bubble content rate of the vitreous silica block."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Evaluation method of suitable silica powder in manufacturing vitreous silica crucible for pulling of silicon single crystal","description":"An evaluation method of suitable silica powder for forming a bubble-free layer of a vitreous silica crucible for pulling of a silicon single crystal, includes: a process of measuring a porosity betwee","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9637405","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-9637405","citation_suggestion":"Patentable. \"Evaluation method of suitable silica powder in manufacturing vitreous silica crucible for pulling of silicon single crystal\" (US-9637405). https://patentable.app/patents/US-9637405","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9637405","json":"https://patentable.app/api/llm-context/US-9637405","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T16:52:09.079Z"}