{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9739597","patent":{"patent_number":"US-9739597","title":"Method of authenticating a polymer film by thickness measurement with a white light interferometer","assignee":null,"inventors":[],"filing_date":"2009-04-28T00:00:00.000Z","publication_date":"2017-08-22T00:00:00.000Z","cpc_codes":["G01N"],"num_claims":12,"abstract":"A method of authenticating a polymer film comprises measuring the thickness of a layer therein by white light interferometry and/or measuring the birefringence of a layer therein. The method, and devices to carry out the method, may be used in security applications, for example to test for counterfeit bank notes."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method of authenticating a polymer film by thickness measurement with a white light interferometer","description":"A method of authenticating a polymer film comprises measuring the thickness of a layer therein by white light interferometry and/or measuring the birefringence of a layer therein. The method, and devi","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9739597","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-9739597","citation_suggestion":"Patentable. \"Method of authenticating a polymer film by thickness measurement with a white light interferometer\" (US-9739597). https://patentable.app/patents/US-9739597","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9739597","json":"https://patentable.app/api/llm-context/US-9739597","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T05:38:03.203Z"}