{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9812447","patent":{"patent_number":"US-9812447","title":"Bipolar junction transistors with extrinsic device regions free of trench isolation","assignee":null,"inventors":[],"filing_date":"2016-02-02T00:00:00.000Z","publication_date":"2017-11-07T00:00:00.000Z","cpc_codes":["H01L"],"num_claims":16,"abstract":"Device structures and fabrication methods for a device structure. One or more trench isolation regions are formed in a substrate to surround a device region. A base layer is formed on the device region. First and second emitter fingers are formed on the base layer. A portion of the device region extending from the first emitter finger to the second emitter finger is free of dielectric material."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Bipolar junction transistors with extrinsic device regions free of trench isolation","description":"Device structures and fabrication methods for a device structure. One or more trench isolation regions are formed in a substrate to surround a device region. A base layer is formed on the device regio","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9812447","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-9812447","citation_suggestion":"Patentable. \"Bipolar junction transistors with extrinsic device regions free of trench isolation\" (US-9812447). https://patentable.app/patents/US-9812447","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9812447","json":"https://patentable.app/api/llm-context/US-9812447","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T17:27:08.902Z"}