{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11502554","patent":{"patent_number":"US-11502554","title":"Methods and apparatus for online foreign object detection in wireless charging systems","assignee":null,"inventors":[],"filing_date":"2020-01-23T00:00:00.000Z","publication_date":"2022-11-15T00:00:00.000Z","cpc_codes":["H02J","H02J"],"num_claims":18,"abstract":"Methods and apparatus for online foreign object detection for use with wireless charging systems. In an embodiment, an apparatus is provided that comprises a resonant circuit having a foreign object detection (FOD) coil that is energized by an online power transfer coil. The resonant circuit outputs a time-decaying resonate signal that indicates whether or not a foreign object is present. The apparatus also comprises a determination circuit that determines a decay time from the time-decaying resonate signal, and a detector circuit that outputs a detection signal having a first state when the decay time is greater than a threshold value to indicate that a foreign object is not present. The detector circuit also outputs the detection signal having a second state when the decay time is not greater than the threshold value to indicate that a foreign object is present."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Methods and apparatus for online foreign object detection in wireless charging systems","description":"Methods and apparatus for online foreign object detection for use with wireless charging systems. In an embodiment, an apparatus is provided that comprises a resonant circuit having a foreign object d","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11502554","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-11502554","citation_suggestion":"Patentable. \"Methods and apparatus for online foreign object detection in wireless charging systems\" (US-11502554). https://patentable.app/patents/US-11502554","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11502554","json":"https://patentable.app/api/llm-context/US-11502554","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T06:34:53.283Z"}