{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9729332","patent":{"patent_number":"US-9729332","title":"Device authentication system and authentication method","assignee":null,"inventors":[],"filing_date":"2015-06-01T00:00:00.000Z","publication_date":"2017-08-08T00:00:00.000Z","cpc_codes":["H04L","G06F","G06F","H04L"],"num_claims":11,"abstract":"An authentication system according to the present disclosure includes a first controller connected to a first server via a first network, a second controller connected to a second server via a second network, and a device. The device compares a next issue date described in a first certificate revocation list acquired from the first controller and an issue date described in a second certificate revocation list acquired from the second controller thereby determining whether the first controller is invalid or not."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Device authentication system and authentication method","description":"An authentication system according to the present disclosure includes a first controller connected to a first server via a first network, a second controller connected to a second server via a second ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9729332","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-9729332","citation_suggestion":"Patentable. \"Device authentication system and authentication method\" (US-9729332). https://patentable.app/patents/US-9729332","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9729332","json":"https://patentable.app/api/llm-context/US-9729332","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T06:59:27.255Z"}