{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8531281","patent":{"patent_number":"US-8531281","title":"Device and a method for detecting motor vehicles and their approach angles","assignee":null,"inventors":[],"filing_date":"2008-07-18T00:00:00.000Z","publication_date":"2013-09-10T00:00:00.000Z","cpc_codes":["G08G"],"num_claims":12,"abstract":"A device and a method for detecting motor vehicles and their approach angles by passive or active transponders which are provided on the motor vehicles is described, which can be triggered by a transceiver device to transfer information stored in the transponders. It is recommended that on a motor vehicle at least two transponders are arranged with a restricted emission angle range and a different emission direction, and that information suitable for identifying the motor vehicle is stored in the transponders."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Device and a method for detecting motor vehicles and their approach angles","description":"A device and a method for detecting motor vehicles and their approach angles by passive or active transponders which are provided on the motor vehicles is described, which can be triggered by a transc","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8531281","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-8531281","citation_suggestion":"Patentable. \"Device and a method for detecting motor vehicles and their approach angles\" (US-8531281). https://patentable.app/patents/US-8531281","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8531281","json":"https://patentable.app/api/llm-context/US-8531281","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T19:35:41.439Z"}