{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9819401","patent":{"patent_number":"US-9819401","title":"Highly selective low-power card detector for near field communications (NFC)","assignee":null,"inventors":[],"filing_date":"2015-09-24T00:00:00.000Z","publication_date":"2017-11-14T00:00:00.000Z","cpc_codes":["H04B","H04B","H04B","G06K","H04B"],"num_claims":20,"abstract":"Described herein are architectures, platforms and methods for implementing low-power detection of a near field communication (NFC) card or tags. In particular, an NFC antenna is integrated with at least one transistor to form an oscillator. A substantial decrease in oscillator's oscillation indicates presence or detection of the NFC card or tag."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Highly selective low-power card detector for near field communications (NFC)","description":"Described herein are architectures, platforms and methods for implementing low-power detection of a near field communication (NFC) card or tags. In particular, an NFC antenna is integrated with at lea","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9819401","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-9819401","citation_suggestion":"Patentable. \"Highly selective low-power card detector for near field communications (NFC)\" (US-9819401). https://patentable.app/patents/US-9819401","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9819401","json":"https://patentable.app/api/llm-context/US-9819401","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T14:25:05.282Z"}