{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9791412","patent":{"patent_number":"US-9791412","title":"Sensing device","assignee":null,"inventors":[],"filing_date":"2014-06-09T00:00:00.000Z","publication_date":"2017-10-17T00:00:00.000Z","cpc_codes":["G01N","G01N"],"num_claims":5,"abstract":"A sensing device is provided that has satisfactory sensing accuracy when a crystal unit where an excitation electrode is formed on both upper and lower surfaces of a piezoelectric piece is used to sense a sensing object. Adsorption regions are arranged in two places so as to intersect a direction of flow of a fluid, thus each of the adsorption regions senses the sensing object and reference regions are individually provided in these adsorption regions. A difference Δf1 between the oscillation frequencies of the regions and a difference Δf2 between the oscillation frequencies of the regions are added, and based on the result of the addition, whether the sensing object is present or not and its concentration are detected."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Sensing device","description":"A sensing device is provided that has satisfactory sensing accuracy when a crystal unit where an excitation electrode is formed on both upper and lower surfaces of a piezoelectric piece is used to sen","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9791412","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-9791412","citation_suggestion":"Patentable. \"Sensing device\" (US-9791412). https://patentable.app/patents/US-9791412","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9791412","json":"https://patentable.app/api/llm-context/US-9791412","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T07:42:07.612Z"}