{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9792750","patent":{"patent_number":"US-9792750","title":"Method and apparatus for checking a value document","assignee":null,"inventors":[],"filing_date":"2012-12-19T00:00:00.000Z","publication_date":"2017-10-17T00:00:00.000Z","cpc_codes":["G01N","G01N","G01N","G01N"],"num_claims":19,"abstract":"There is described a method for checking a value document of a specified type for the suspected presence of a forgery, in particular of a pieced-together forgery, wherein at least one ultrasonic property of the value document is captured in a spatially resolved manner so as to form location-dependent measuring data, wherein while employing the location-dependent measuring data it is checked whether there are present in a specified checking region of the value document two areal regions whose ultrasonic properties deviate from each other according to a specified difference criterion, and wherein there is formed an authenticity signal which represents the result of the check. Further, a corresponding checking device is described."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and apparatus for checking a value document","description":"There is described a method for checking a value document of a specified type for the suspected presence of a forgery, in particular of a pieced-together forgery, wherein at least one ultrasonic prope","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9792750","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-9792750","citation_suggestion":"Patentable. \"Method and apparatus for checking a value document\" (US-9792750). https://patentable.app/patents/US-9792750","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9792750","json":"https://patentable.app/api/llm-context/US-9792750","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T13:42:19.661Z"}