{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9831711","patent":{"patent_number":"US-9831711","title":"Foreign object detection device, foreign object detection method, and non-contact charging system","assignee":null,"inventors":[],"filing_date":"2015-08-18T00:00:00.000Z","publication_date":"2017-11-28T00:00:00.000Z","cpc_codes":["H02J","H02J","H02J","H02J"],"num_claims":7,"abstract":"Disclosed herein is a foreign object detector to detect a foreign object while distinguishing metal from water. The foreign object detector includes a detection coil; a transmitting circuit generating RF power of a predetermined frequency; a directional coupler outputting the RF power supplied from the transmitting circuit to the detection coil, and extracting reflected power that is a power component reflected by the detection coil; and a detection circuit receiving the reflected power extracted by the directional coupler, and detecting the foreign object by sensing a change in the frequency characteristic of the reflected power."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Foreign object detection device, foreign object detection method, and non-contact charging system","description":"Disclosed herein is a foreign object detector to detect a foreign object while distinguishing metal from water. The foreign object detector includes a detection coil; a transmitting circuit generating","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9831711","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-9831711","citation_suggestion":"Patentable. \"Foreign object detection device, foreign object detection method, and non-contact charging system\" (US-9831711). https://patentable.app/patents/US-9831711","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9831711","json":"https://patentable.app/api/llm-context/US-9831711","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T07:41:38.460Z"}