{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-10490639","patent":{"patent_number":"US-10490639","title":"Low collector contact resistance heterojunction bipolar transistors","assignee":null,"inventors":[],"filing_date":"2018-03-27T00:00:00.000Z","publication_date":"2019-11-26T00:00:00.000Z","cpc_codes":["H01L","H01L","H01L"],"num_claims":13,"abstract":"In certain aspects, a heterojunction bipolar transistor (HBT) comprises a collector mesa, a base mesa on the collector mesa, and an emitter mesa on the base mesa. The base mesa has a tapered sidewall tapering from a wide bottom to a narrow top. The HBT further comprises a collector contact on a portion of the collector mesa and extending to a portion of the tapered sidewall of the base mesa."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Low collector contact resistance heterojunction bipolar transistors","description":"In certain aspects, a heterojunction bipolar transistor (HBT) comprises a collector mesa, a base mesa on the collector mesa, and an emitter mesa on the base mesa. The base mesa has a tapered sidewall ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-10490639","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-10490639","citation_suggestion":"Patentable. \"Low collector contact resistance heterojunction bipolar transistors\" (US-10490639). https://patentable.app/patents/US-10490639","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-10490639","json":"https://patentable.app/api/llm-context/US-10490639","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T12:44:37.276Z"}