{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9845991","patent":{"patent_number":"US-9845991","title":"Heat treatment apparatus","assignee":null,"inventors":[],"filing_date":"2013-10-30T00:00:00.000Z","publication_date":"2017-12-19T00:00:00.000Z","cpc_codes":["H01L","H01L"],"num_claims":4,"abstract":"Provided is a heat treatment apparatus, which includes: a cylindrical quartz reaction tube having a furnace opening and a bottom flange at a lower portion thereof; a flange holding part configured to hold the bottom flange of the reaction tube; and a lid including a metal lid and a quartz lid supported by the metal lid, the quartz lid being configured to close the furnace opening of the reaction tube. The quartz lid is fixed onto the metal lid by a support ring. The support ring is brought into contact with a bottom surface of the flange holding part so that a gap is defined between the quartz lid and the bottom flange. A sealing member is arranged outward from the gap in a radial direction."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Heat treatment apparatus","description":"Provided is a heat treatment apparatus, which includes: a cylindrical quartz reaction tube having a furnace opening and a bottom flange at a lower portion thereof; a flange holding part configured to ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9845991","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-9845991","citation_suggestion":"Patentable. \"Heat treatment apparatus\" (US-9845991). https://patentable.app/patents/US-9845991","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9845991","json":"https://patentable.app/api/llm-context/US-9845991","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T05:20:23.976Z"}