{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11521882","patent":{"patent_number":"US-11521882","title":"Wafer notch positioning detection","assignee":null,"inventors":[],"filing_date":"2020-08-20T00:00:00.000Z","publication_date":"2022-12-06T00:00:00.000Z","cpc_codes":["H01L","H01L","H01L","H01L","G01D"],"num_claims":20,"abstract":"An optical system may include a light source to provide a beam of light. The optical system may include a reflector to receive and redirect the beam of light. The optical system may include a light gate having an opening to permit the beam of light, from the reflector, to travel through the opening. The optical system may include a light sensor to receive a portion of the beam of light after the beam of light travels through the opening, and convert the portion of the beam of light to a signal. The optical system may include a processing device to determine whether a notch of a wafer is in an allowable position based on the signal."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Wafer notch positioning detection","description":"An optical system may include a light source to provide a beam of light. The optical system may include a reflector to receive and redirect the beam of light. The optical system may include a light ga","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11521882","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-11521882","citation_suggestion":"Patentable. \"Wafer notch positioning detection\" (US-11521882). https://patentable.app/patents/US-11521882","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11521882","json":"https://patentable.app/api/llm-context/US-11521882","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T16:24:19.507Z"}