{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9776876","patent":{"patent_number":"US-9776876","title":"Chunk polycrystalline silicon and process for cleaning polycrystalline silicon chunks","assignee":null,"inventors":[],"filing_date":"2015-10-30T00:00:00.000Z","publication_date":"2017-10-03T00:00:00.000Z","cpc_codes":["H01L"],"num_claims":6,"abstract":"The invention provides chunk polycrystalline silicon having a concentration of carbon at the surface of 0.5-35 ppbw. A process for cleaning polycrystalline silicon chunks having carbon contaminations at the surface, includes a thermal treatment of the polycrystalline silicon chunks in a reactor at a temperature of 350 to 600° C., the polycrystalline silicon chunks being present in an inert gas atmosphere during the thermal treatment, and the polycrystalline silicon chunks after the thermal treatment having a concentration of carbon at the surface of 0.5-35 ppbw."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Chunk polycrystalline silicon and process for cleaning polycrystalline silicon chunks","description":"The invention provides chunk polycrystalline silicon having a concentration of carbon at the surface of 0.5-35 ppbw. A process for cleaning polycrystalline silicon chunks having carbon contaminations ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9776876","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-9776876","citation_suggestion":"Patentable. \"Chunk polycrystalline silicon and process for cleaning polycrystalline silicon chunks\" (US-9776876). https://patentable.app/patents/US-9776876","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9776876","json":"https://patentable.app/api/llm-context/US-9776876","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T06:09:25.233Z"}